Does Royal Purple Fuel Max Cleaner Actually Work (with Proof)?

In this video I test Royal Purple Max Clean Fuel System Cleaner in a Ford Explorer. I use a borescope camera to look into the engine and see how dirty the engine is before the fuel treatment and then after the fuel treatment. This is the first time I looked at intake runners and valves, and I also looked at the piston head.
I followed the instructions on the container and Royal Purple did clean some carbon off the intake runners, valves, and piston heads. This is the best in fuel system cleaner I have used that goes in the gas (so far)
Here is the fuel cleaner I used: www.amazon.com/gp/product/B00B...
Here is the borescope camera I used: amzn.to/2S5tNcX
Seafoam in Car: • Does Seafoam Actually ...
Seafoam in a Lawn Mower • Does Seafoam Actually ...
Here is the Techron Test: • Does Techron Fuel Syst...
Gumout "all in one" fuel system cleaner test: • Do fuel system cleaner...
Lucas Fuel System Cleaner test: • Does Lucas Fuel System...
CleanBoost Maxx Test: • Can a Fuel Additive Re...
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-Website: www.ChrisFixed.com
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Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.

[@williampennjr.4448]

I want one of those cameras so I can look for where my gas mileage went.

[@hus-_-bro2993]

💀💀

[@ericc1316]

That was funny bro

[@1sthawaiian11]

Lmfao 🤣💯🤦🏾‍♂️

[@natking1u1z99]

lmao tell'em bro

[@rhecyeeyeejake7184]

😆 lol

[@paulmorton5423]

Remember, you can't expect the fuel system cleaners to perform miracles if they've never been used on a regular basis. That's a lot of buildup over the years. Good test.

[@NotExplicable]

Yeah I was wondering about that

[@djdannyp9581]

And you gotta use top tier fuel which contains detergents that help clean as you go. That was a game changer for our vehicles. My lovely Toyota would hardly go at only 50k because of gas that was only a couple dollars cheaper per tank but just let that carbon build right on up because they didn’t add the detergents that clean the system all times of operation.

[@c172215s]

I have not used anything for 160k. LT fuel trim was over 30 on acceleration. Put in Lucas injector cleaner. 30 mi later it was 5. DOn't discount what can be done.

[@chandanjagadesh8404]

Exactly. It's like an old vessel stuck with grime.

[@HoweyJR_]

@@djdannyp9581what’s top tier Fuel?

[@zzaher91]

Ive never bought anything other than royal purple for 15 years there products and oil is really worth it. Everytime i come on this channel this man is taking it to then next level of helping out the community. Chris you Channel really does give me hope for automotive industry as far as when it comes to moral and ethics. So many bad 🍎 have permanently engraved an ideology or belief on mechanics or automotive industry that will take decades to even change a little. Keep it up bro!👊👏

[@over-educated-sp]

Oh yea, I forgot to mention your engine cleaning tutorials! I’m actually proud of how clean all 4 of my cars engines turned out!!!!!!! Thanks again brother!

[@Dcc357]

I think this is more of a fuel injector cleaner, which is great to restore some power. From what I read on reviews, people were happy that this stopped their hesitation issues.

[@Mooseman327]

I used it to clean my fuel injectors because it was running a bit too rough at idle. Runs smoothly now. I'm impressed.

[@CrazieFrogz]

@@Mooseman327 did you use it more then once. Its done pretty good so far but I'm thinking of doing a second round

[@freedomlover3323]

Yep. It's fuel injector cleaner, not a deposit remover. To remove the deposits, Gumout Multi-use Tune-up works wonders! This test is based on bad information.

[@jdclark218]

I second the BG44K cleaner. It's something I've noticed marked improvement on my carbed motorcycle which wouldn't idle without the choke... after one tank of BG44K, it now runs better than when I first bought it.

[@paleodude]

Tried the Royal Purple on my hybrid and it's smoothed out the acceleration nicely but hasn't improved my fuel economy yet. Happy with the purchase.

[@carlosvile9832]

which hybrid and did you use the entire bottle?

[@yanicyoda4762]

change the air filter to high end ones

[@mysticblue3387]

Is Chris from a different world? Seriously bro your really good You gave me confidence in fixing my own car and it’s never been running so smooth I’ve done all the fluids change and a lot more it’s running 100% good now Thank you tons Chris 🙏

[@AlexGreenwoodUkulele]

"Heh, and this stuff is ACTUALLY purple...." ...Said every Royal Purple user ever.

[@chrisfix]

+YoloMcSwaggins lol

[@555iftyCal]

+ChrisFix PLEASE DO BG44K next!!

[@AlexGreenwoodUkulele]

Alexander Chow Not heard of that. I'll have to look that one up!

[@jonbzo4]

+Alexander Chow I was about to ask the same thing. BG44K please.

[@BITEyaTORSO1331]

i did lol

[@marcomontoya5681]

love the kid, so knowledgeable, learning a lot from him, about time, thank you, now I can really keep track of maintaining my truck

[@coalmahn891]

Just finished watching your all your fuel additive videos, & THANKS!!! Big help & will probably use this cleaner from now on

[@AMan-cc1sb]

Clear enthusiasm in voice tone and camera angles

[@leodanryan966]

I am really glad you made this video, and especially the Seafoam video. I actually used the Seafoam on my Lawn Tractor to stop surging. Although it still surges it is a lot better than before. I know you are not advocating one product over another, but I wanted to report that I have had a positive result. Thanks for your videos!

[@fishingmaster99]

Seafoam sucks.

[@jonmo2694]

Not meant for 4 stroke engines

[@TheRuneChemist]

Really enjoy your experiment videos, has a weird sense of originality and mystery to it I guess you could say.

[@dirtymaxdalton2198]

You have such an awesome attitude and it is fun watching your videos thank you for making them and thank you for your help

[@bernardshelton7349]

You did a very good job on this video Chris, it’s the best one I’ve seen from anyone. Awesome job. Question? do you know anything about Diesels? Keep up the good work Chris. I have told many about your videos 👍🏻

[@MassimoTava]

I used to work for a dealership for many years. One product worked so well, it had to be diluted with gasoline because it was so powerful (unless the job called for 100%) Its called GM Top engine cleaner. You may have to ask at parts department for it, it's not expensive (maybe $6-10) a can. You can use it many ways but I seen it spayed into the throttle body over 15 minutes (with a pressured air adaptor). I would like to see how it works in your videos.

[@abeg1571]

I looked this up online and it definitely seems to be one of the most potent ones on offer.

[@Greenhelix5]

Interesting friend thanks

[@marcelzues1513]

Keep that in mind

[@abeg1571]

Marcel Zues I designed this rhyme?

[@buffalowick8003]

abeg1571 to remind you of the time?

[@generalralph6291]

I noticed a considerable improvement in acceleration performance with one treatment on a high-mileage vehicle. Remember: Royal Purple is a _fuel injector cleaner._ Sure it will scrub carbon from your cylinder but that isn’t the point.

[@SpaceCadet4Jesus]

Add "scrubbing bubbles" for a cleaner experience.

[@generalralph6291]

@@SpaceCadet4Jesus 10-4

[@bennygreene1421]

The main point often is fuel injector maintenance and cleaning

[@steveb2528]

Great test using the camera. Past tests show that fuel cleaners with D.E.A do the best job as far as gas additives.

[@jonathanschmidt417]

Always love the videos even seven years later , you should do a update or a how to for GDI engines considering they are pretty popular

[@bnolsen]

My dad who worked for years as an aircraft mechanic and for a while as a race car mechanic and currently works on a lot of cars volunteering at a seminary in texas. He suggests putting in a quart of ATF fluid to clean out these deposits. He says it works well in making cars run smoother.

[@mattbennett6453]

Wow Chris, you broke my heart with this video.. well Royal Purple did. I'm a big believer in RP, I use their rear end diff oil, engine, transmission, and even radiator "purple ice" (for aluminum heads and water pump treatment) Hell, I haveRP Gun oil as well. My dad gave me the gas treatment a few times and can't wait to show him your un-biased video.. thx man, keep it up

[@VROOOOOOOOOOOOOOOM]

Royal purple is good stuff, but it's more on par with mobile1. If you want the best of the best get amsoil or redline.

[@marioposada8955]

Im just going through all your videos and Just wanted to say I am soooooooooo glad I found your channel man. Thanks for everything your doing. Once suggestion is can you try Zmax fuel cleaner. I am super curious to see what those results could be

[@weimarutube]

Chris, Love your videos. Your a favorite and the public is in debt to your time and experience. I certainly subscribed. I found this series so informative and wanted to express my appreciation to you. I do have a question to expand on your testing as I saw another video that came at this from a different angle - Water. I saw that water can be more effective and it seem to make sense. The products that burn hotter clean the best. highways driving is the best conditions. Steam is much hotter and may be more effective agent than these cleaning products. Logically it makes sense but I have no data to support my perceived logic from my research. What are your thoughts on using water to clean out carbon deposits? How would it compare to these products? Thanks. Fan of ChrisFixOops, saw that others have commented on the water approach. I'll read up.

[@Barnekkid]

Another good one from Chrisfix. It seems like all these cleaners work to some degree more or less. What the mfgrs don't tell you is that it takes gallons of the stuff before there's any significant affect.

[@Zmairo]

Hey Chris, If you wanna see results from these products, try getting an worn or a short trip runner engine and give them two bottles as in double dose, you should run these engines in highway speed conditions, as much as possible while using the cleaner, I suggest this it's due to as you describe in your vid the engine you're testing here aren't really having carbon related running issues, so most likely it isn't going to do much. Thanks for the vids

[@teacher913]

Thanks for the videos. That's the kind of information exchange this medium was made for. Keep up the good work

[@AlphaMindset888]

I just want to say thank you, I’ve learn a lot from you and hace saves probably thousands

[@work4dough]

Chris you're awesome, love all your videos. Very thorough

[@brockallentaylor]

Good job man, keeping it straight to the point without any BS. I wish there were more people on KZbin taking this approach. It's good to see someone with minimal resources doing solid research.

[@chrisfix]

Thanks Brock!

[@firehog]

I agree with you Brock! I couldn't have written it better, thumbs up for both of you!

[@zzaher91]

Exactly real genuine human. Would be honored to help this man if he ever needed it. 🙏

[@arejaye]

You've got some great vids for the DYI person who likes to keep their car or truck clean and maintained. I have one issue though with some of the 'fuel cleaner' vids. I was always taught to not let your vehicle go below a quarter tank of gas so if any garbage is in their it won't all hit your engine at once. In this vid you instructed your friend to drive the truck til it was almost out of gas and then you use the cleaners. Is this to also get rid of any garbage in the tank or....??? Thanks and keep the vids rollin'!

[@over-educated-sp]

I agree. Chris seems like a hard working guy, with the support of his amazing parents. He’s actually testing products he’s not getting paid to review, and he had me subscribe to one of my first KZbin channels by his headlight cleaning tutorials. I’ve cleaned mine, my wife’s, and my parents cars headlights with the spot on results he walked me through. You’re awesome. I also just watched the Thunderbird, you gave your mom. Much luv, your word to me, now is freaking golden! Thanks man, for doing what you do. I’m proud to say, your word means it’s weight in that “golden” description I just made! I’m stoked to do all my cars with the Sea foam line. I’m a little disappointed in the Lucas cleaner, because everything besides that one has never done me wrong. Here’s to an awesome guy, with awesome parents! Love your kids guys! My kids are my reason for living, and I hope they all end up like you buddy.

[@hammertime4257]

He's getting paid by KZbin Hello anybody in there junior

[@over-educated-sp]

@@hammertime4257 bro, at least he’s trying. Who cares about who’s paying him. Almost all his hacks, I’ve tried, used, and have saved sooooo much money instead of paying someone god knows how much more. No hate man, but he found a way to make a living. Yea, F you Susan Wazowski! I support you totally, but to hate on him for becoming somewhat successful? Bro, then you do do it.

[@GenX...MCMLXV]

@@hammertime4257 sorry you live such a sad life..............

[@jonmo2694]

Sea foam is for 2 stroke, not modern cars

[@ChristianNeff]

ChrisFix! Spray some water lightly into the intake with a spray bottle and see how that works! Theres a ton of people that say this is how you clean that carbon off completely. Even EricTheCarGuy says it works. I wanna try it on my 06 Mustang GT but I'm scared to do it! lol!

[@budaiadi8185]

me 2 :) doit pls pls.

[@stupa55]

+Christian Neff, He already did this, he told in the end you never get a shiny piston head as from a head gasket leak :) This is the conclusion water cleans the best over time :)

[@arty1799]

+Christian Neff It would be nice to see some before/after results of a proper water fog treatment.

[@fdamien80]

EricTheCarGuy did this. Pretty amazed with the results.

[@markusstrobl1067]

+Christian Neff Water can do a pretty good job on the carbon buildup on pistons, but will do nothing for the intake valves. Intake valve deposits cause more driveability issues than piston deposits, unfortunately.

[@FNCXPunk]

Love these videos man. How long have you been into cars to know so much about cars?

[@Don-jh4fp]

These videos are so interesting!!!! Great job Chris and thanks!!! How about Lucas?

[@thomassimms1303]

You give the best information and videos on youtube.

[@mattc1219]

Based on each valve, having pretty substantial differences in carbon, one being completely clean, one being totally dirty, I’d probably say that that engine has issues outside of a fuel system cleaner being needed

[@truckerenoch8824]

I think even the best cleaners will need at least 3 applications, in order to flush out the carbon that broke loose and deposited somewhere else. Also, the reason the cleaner pistons don't see as much result is that those pistons are not getting as much fuel. Since the cleaner is in the fuel, those pistons won't clean as well. It's usually the pistons furthest from the fuel pump, at the front of the engine that will be cleanest.

[@travvypoo]

I like your videos, Chris. Keep them coming.

[@mattcottrell3336]

Old video new comment. I've been using this stuff for the past few months in my vehicles and have noticed a serious difference with how they exhaust.... I always add the max clean when engines at 205° and drive aggressively to clean the valve seats and injectors. Looking at the top of the piston head you will see some of the carbon eaten away.... But where you're really wanting it to eat carbon away is on the cylinder wall so the rings can compress freely the way they do on a new engine.... Using this every other time I get gas... I have noticed how much cleaner my fuel system is, and it even saved me a fuel filter change on a project truck I bought that was straight piped and ran lean for a LONG time.... Royal purple is worth the money. Lucas and techron have been successful for me as well, but this stuff has always been the most effective as far as performance. Chrisfixx makes great videos but I've noticed he is more focused on the top of the piston head than where.the.rings meet the cylinder wall. Those rings HAVE to stay clean in order for that engine to survive for a long time. Either way, love these videos!

[@702Wolfi]

Using these cleaners early on in the engines life about every 3000 miles gives amazing results.

[@Codemeister99]

I think thats the idea it says every 10,000 miles right on the can its more preventative than anything else

[@jonmo2694]

@@Codemeister99 not the max clean 6 oz it's every fill up or 3k

[@Codemeister99]

@@jonmo2694 fair enough I was speaking more to the fact its not really meant to clean hard deposits that are already there more to prevent the buildup in the first place

[@MrLouboy999]

"......I'd say it's still not as good as Sea Foam......" and that's all I needed to know since my 2001 Tacoma is due for some love! Thanks Chris, Sea Foam it is!

[@sebastiansmith7642]

All your videos are very helpful keep up the good content 👍

[@smartman123]

you are very very professional and I trust your videos

[@KingDerp93]

marvel is the one I'm waiting on. over 80 years it must do something

[@chrisfix]

Stay tuned. I'm looking for a car to test it on.

[@HoustonRocket281]

+ChrisFix i been waiting for the marvel oil also bro. lol

[@montyturley28]

me too

[@JayUT2011]

+ChrisFix me too!

[@coreysharp9794]

+ChrisFix me 4. please test mmo

[@NickTheSheep1379]

Most of these are recommended every 3k miles/ every oil change interval so it’s silly to expect massive results from one application. They’re intended to maintain not restore. 👍

[@JesusNOTreLIEgion]

@N Diesal you can literally see the results yourself, there are also people who have used this product multiple times, My camera to look at the inside just like he did and it does absolutely work there's no if ands or buts about it it's irrefutable video evidence. So if it's trash in the can then it is trash in a can that works, I bet you're the guy who says clean them yourself which obviously yes that is the best way to do it is to get a valve job done but if you're just trying to get some simple cleaning and improve performance and life of the vehicle this absolutely helps on a measurable scale nice childish comment dude. You could at least explain WHY you think it's trash if you want to have a discussion like an adult.

[@Eddi3Pwns]

With enough applications as preventative maintence, it will likely restore a lot, but you're right it will take multiple applications as part of a maintence plan. I like to think of it like brushing our teeth, consistency is key.

[@als.3287]

Amazing test!

[@atgn-0088]

I've been using RP Max clean since this video came out. Figured I'd share my experiences over the years for the folks that will end up here later. Vehicle 1- 2004 Chevy Tahoe 5.3L . Can't say I really noticed any improvement in MPG, but after putting in a few cans, the truck did accelerate smoother and seemed to have a little bit more bottom end power. Vehicle 2- 2015 Ford Taurus SHO 3.5L EcoBoost. I didn't notice any good or bad with using Max Clean. The vehicle already ran fine with no issues. it just didn't seem worth the money with this specific vehicle. It's worth noting that the 3.5L EB is a direct injection engine, so the valves never got fuel+Max Clean sprayed on them. Vehicle 3- 2020 Nissan Murano 3.5L V6. This was when Iearned that Max Clean is best used before heading out on a road trip. I noticed the car did idle and accelerate smoother after a 3.5 hour drive with Max Clean. There were way too many variables on these trips (construction closures, stop and go driving due to accidents, weather, etc.) for me to say anything about fuel economy. Only paying $20 for noticeably smoother idling and acceleration doesn't seem like a bad deal at all.

[@MultiChimRichalds]

Its been almost three years, where are the other fuel system cleaner tests? I'm interested in the Amsoil PI test.

[@THXIIIRTEEN]

This comment is now 3 years old

[@MultiChimRichalds]

@@THXIIIRTEEN Holy shite, I forgot all about this 😅

[@johnwhitaker657]

you do a great job with your videos. I've watched a lot of them. I know you've tried a lot of fuel system cleaners. in your opinion what is the best one you tried? have you tried Redline?

[@1020Shane]

Thanks for these videos, chief.

[@AlongtheRiverLife]

Thanks, I use both and have wondered if they/which work.

[@carbonfiberwizard5416]

Love to see the results for the Redline cleaner, and amsoil!!

[@galatraproductions4752]

ChrisFix, I want to see a review about BG 44K Platinum.

[@bigdaddy5150sh71]

I use B-12 chemtool. Very satisfied with that brand.

[@kcianderson001]

I actually like the products they all worked well but I think about using them is to repeat the application twice for a better results I am impressed I like it all.

[@ChristopheZ]

I don't see the link to the REDLINE...have you done the test? is it working? thank you

[@boomy818]

Please try the liqui moly cleaner. They make some of the best products!!

[@sixfootdworf9545]

I've used the STP 5 in one cleaner and the valveoline on my 3.7L V6 2013 mustang. The stuff does work, it's just slow. I add it in every 4 our five tank fills along with my octane booster. Everytime I take my car in and ask them to take a look at my piston heads the mechanic tells me its really clean in there. No rough idleing from this car either, which is nice. It isn't miraculous like the bottle says it is, but it does work. I'd recommend you start using it every couple thousand miles or so after you've hit the 30K mile mark, or after your warranty expires.

[@manosvitalis4399]

Very helpfull vids mate keep them coming !

[@timboslice1979]

I use BG 44k. Great stuff. Using Top Tier gas is also important in keeping your injectors clean.

[@assai74]

It would be interesting, how the carbon deposits vary over the same timeperiod without any cleaning additives. I assume, it will be about the same. Carbon will bild up untill it falls of randomly (like cylinder 1)

[@alexralston22]

Thank you for your service

[@FamedMatthew13]

For anyone wondering about this stuff I use it every oil change that I do. I recently had to change my MDS solenoids in my 5.7L hemi. while doing that I had to pull my intake and I looked at my intake in my heads and they still look brand new no carbon at all. Same with the valves look brand new. took my borescope to the pistons thru my spark plugs they look good as well, not near as good looking as the intake runner or valves but a thin coat of carbon. But for my cars miles looks great. My car has 250,000mi on it and I have had it 7years and used this every oil change. I do an oil change every 5-7k miles. So I would say that if you use it regularly you will get the best results.

[@psychopathicunity]

I'd love to see one of these tests on a newer car. Maybe it'll keep the combustion chambers like new if it's used every oil change as they suggest. Just a thought.

[@sil3nt777]

I have a good question, what if you put lucus oil base every weekend or when you put a full tank of gas? Will it be better for the engine or it won't matter?

[@angelogotrice]

I used the royal purple along with the seafoam concentrated that looks like the lucas one worked extremely well I dumped both in at the same time then filled up the tank idle smooth acceleration most definitely improved almost instantly and by the way my vehicle is an 04 explorer with the 4.0 v6 engine

[@carlosmozelle9974]

This is the best chanel. CHRISFIX....others need to steady camera and or be talking talkn classes

[@chrisfix]

+Carlos Mozelle thanks a lot!

[@louis85mac]

Hey Chrisfix, would you be up for a challenge? I'd like you to run your car on 2 tanks of BP ultimate or shell v power and have a look at the cylinder heads to see if it cleans anything! This seems to be a big question for a lot of people these days. Cheers, keep up the good work

[@TheFern17]

Hey Chis, just wanted to run this idea to you. Love your videos! So what I get from these videos is that the fuel additives aren’t a “one and done” type of thing. I believe that they should be approached as a maintenance method. You said that carbon build up is created “over time” so it only makes sense that these thing be used in intervals in order to get drastic results. For example before every oil change or after x amount of miles. I assume that it will take time to get results like with anything else. Those are my thoughts, let me know what you think!

[@sunnysingh8483]

I think you’re right!

[@brianpetch9534]

That's what I was thinking also.

[@joshuagomez3600]

Nice test thanks!

[@junkiexl86]

I always get 2 cans at a time. First can into the tank when its down to a 1/4 and then run it till the gas light comes on, then put in the 2nd bottle and top off the tank with it. I always use Shell 93 on fill-ups with cleaner since it always seems to enhance it lol. I haven't tried their max-clean, but I've used their Max Atomizer before and I could instantly tell a difference. I used to use Gumouts multi-system tuneup additive since other videos showed the biggest difference in the before and after with it and I thought it did a good job, though I never quite noticed a difference and both my cars (17k miles and 34k miles) always had a slight miss every now and then at idle. That Max Atomizer stopped the occasional miss the Gumout never did and it had a noticeable improvement in pep and idle smoothness just 50 miles into it that I never noticed with the Gumout Multisystem TuneUp additive (was always told to stay away from their "all in one" additive as it was a joke).

[@justinandrasstikwititfitne2161]

Lucas gas treatment seems to work well with cleaning the injectors and fuel system out. Never used Royal Purple !

[@outdoorsmanlifestyle2434]

Justin Andras Stikwititfitness I use royal purple and Lucas both work amazing!

[@BlkFireHawk427]

Hey Chris thank you for all your videos and all of us enjoy every single one of them! With that said and these fuel system cleaners, when it comes to the combustion chamber I wonder if it would just be better to run the highest octane available as well as some fuel stations have racing fuel that is 100 octane plus and just run your car really hard causing higher fuel combustion temperatures there for getting rid of some of the carbon that would have the same effect. so somebody who puts this in their vehicle when they're getting on the freeway happens to floor it causing high RPMs and higher temperatures in the combustion chamber. Maybe possibly adding a higher octane racing fuel or 91 + adding the fuel system cleaner to it as well as a octane booster that is sold at most automotive stores. This would be the cleaner and a higher octane booster causing a higher temperature in the cylinder possibly cleaning out some of this carbon buildup. thank you so much for your videos look forward to the next one.

[@SpaceCadet4Jesus]

You're talking the "Italian tuneup" mostly. Not sure it works as well on modern engine design, although it used to work well way back in the day.

[@SingleMaltBuckeye]

Higher octane doesn't necessarily mean better for your car. Most cars are engineered and tuned for specific octane ratios. Going below or above can cause issues. Mostly less power and milage due to the car not having the ability to ignite that mixture effectively. Resulting in unused/unspent fuel. You'll smell gas when u drive.

[@SH-ry2xi]

excellent video dude

[@TheShootist]

cleaning a clean engine? GREAT JOB

[@ViperJay5]

Hey Chris, do you think sometime in the future you could do a spot on top tier fuels? I'm really curious to see if they're really better for your engine and help keep it cleaner.

[@mtnbikerva1]

@@Random-ed2xf TOP TIER FUEL does not mean 91 or higher octane. TTTF Is Higher quality fuel.

[@calicozac]

Hey Chris, did you check to see if the fuel injectors were clear before this test? I wonder if the injector for cylinder two was clogged and prevented the cleaner from working as well as it may have in cylinder one.

[@John-uj9zy]

Liqui Moly is the only brand of fuel additive I still use. Chevron Techron works as well. You want to use Techron before an oil change. I wouldn't use Techron more than 3 times inbetween oil changes. It works so well it will start to break down motor oil if used too much.

[@rust2985]

The car has an intake manifold gasket leak. You can see clearly that there's coolant pooling on the closed intake valves in your borescope shots.

[@rust2985]

It probably helped with cleaning too lol

[@Dolby109]

Why would there be coolant running through the intake manifold? Wouldn't that be a head gasket failure?

[@rust2985]

Dolby 109 A failed intake manifold gasket is the reason for the coolant entering through the intake ports because the coolant crossover between the two cylinder heads is leaking. The intake gasket is used not only to seal the intake runners but also the coolant crossover. When the intake manifold fails the coolant can escape from the crossover and run freely down the intake ports of the head and it usually fills the spark plug wells causing a misfire as well. An intake manifold gasket failure is often misdiagnosed as a head gasket failure because some of the symptoms are similar.

[@Dolby109]

Mike Tunstall This must be a very strangely designed intake manifold.

[@rust2985]

Dolby 109 Well, it's not too strange. Every V8, V6, V10 I've ever seen has coolant crossovers through the intake manifold. Most of the time the thermostat housing is also incorporated into the intake manifold as well. On top of that there are usually EGR passages as well.

[@chrisladouceur4093]

Have you ever done a control? It would be interesting to see if there is any noticeable changes when running through a tank without anything in it. Also I'd argue there's a good chance that some of the carbon in this case was relocated down line, much as you hypothesized with the one valve that got dirtier.

[@maurice2014]

The control was in the beginning. He video taped the insides with "nothing in it" to base the whole experiment on.

[@HadToChangeMyName_YoutubeSucks]

​@@maurice2014-- When I saw the post I thought, so you want him to add 20 ounces of plain gas and test with that as a control?

[@michaelmayhem3781]

You are my KZbin hero!

[@thdjjfsfh]

Thank you so much for doing all this work. Great information for us. You should create a Patreon account so we can help you out with the cost of doing these test.

[@robertallen3133]

Great videos ! Have you tried Berryman® B-12 Chemtool® Carburetor, Fuel System and Injector Cleaner ? Again thank you for all your videos !

[@SantiagoRamirez-wm2mo]

Ohh yeah B12 is the best

[@mrhyperbolic7455]

That cleaner works best for the fuel injector. Really what it is meant to do and my experience is it CAN make a big difference. Use 2X..

[@ADuran-jk6uz]

Thank you for true blue result based testing.

[@fredbach6039]

I would like to see FUEL comparisons. Especially re ethanol percentage. I found Canadian Mohawk 90 with considerable ethanol to keep my old oil burner Ford 390 spark plugs clean. It was phenomenal.

[@Tater79bj]

anybody notice what looks like coolant sitting on top of the valve?

[@sniperlif3]

+Tater79bj That is what happens to metal when it heats and cools many times.

[@poobank]

that's what I was thinking

[@ryandaddy2044]

+Tater79bj MORTAL KOMBAT!!!!!!!!!!!!!!!!!!!!!!!

[@ChucksBasix]

+Tater79bj Probably motor oil from leaky valve guide seals, or condensation that has formed inside the intake as it cooled.

[@philtripe]

+Tater79bj its actually condensation...that was my first thought too that it looked like antifreeze but cameras are really bad at guessing what color stuff is when theres no white to balance against...its called "white balance" and its how digital cameras figure out what color stuff is...ie the green/ gold dress photo that some people saw as green and some saw as gold was really a goof by the camera's white balance

[@michaelmyjak4630]

I've used Berryman's B-12 Chemtool for years. Now I've been a mechanic since the early '70s. Before the time of computer controlled fuel injection, carbs were the norm and quite frankly, they were a dirtier affair, as far as the engine internals were concerned. It wasn't just carbon build-up inside the cylinders that affected an engine's life/performance, but the oil would be contaminated too from excess fuel getting past the rings. The points-based ignition systems and the whole thing would be lucky to last 100k miles. Spark Plugs and points would need to be changed every 12K miles. Today, engine life expectancy is twice that or more. Plus tune-up frequency is between 60-100K miles. So life is a lot different today for most engines. As I said, I've found Chemtool to be a great general purpose brake and gunk cleaner. It removes gasoline varnish while leaving most other brands looking stupid. I have never tried testing it using a borescope, but you might want to add B-12 Chemtool it to your testing arsenal. In my day, I used to recommend a customer run a gallon of Diesel fuel through the gas tank every fourth or fifth tank full. I can tell you my results were engines with clean top-ends, heads that didn't have a nasty build-up of crud/wax/grease around the valve springs or in the oil galleys. (This is what also leads to internal engine wear.) The pistons and valves also appeared to be significantly cleaner over the long haul. The real difference was in their mileage - most of my customers who followed this advice would expect another 50-100k miles out of their rides. From personal experience, I had a '68 Mustang 302 that went over 238K miles before I broke it down (radiator leak caused it to over heat) and when I examined it - it was amazing, really, after this kind of care. Yes, the piston rings cracked from the heat, but the engine was very clean inside and throughout. Besides the diesel or Chemtool, you might also want to try adding a small stream of water to your intake, like you did with the seafoam cleaner, limit the amount injected through a small hose. Again, do not use enough to create hydro-lock, but enough to vaporize within the combustion chamber while running. The expanding stream of steam will often times blow away most of the larger (and more porous) hunks of attached carbon. I think the diesel fuel works the same way as it has a very low octane count. Diesel is oily and wet, and will tend to saturate in to the carbon deposits. It is not ignited by the spark plug or compression, however. Instead, in this case, the diesel is ignited by the gasoline. This gives the wet diesel an opportunity to wet then blow-off the carbon deposit(s). YMMV. But since you were interested in running these tests, I thought you might be interested in giving these age-old tests a run through as well. IF you try the diesel, I would suggest you do so with premium fuel - and non-ethanol added fuel to boot. The increased octane will help offset the lower octane rating of the diesel. (You should be able to find premium recreational fuels at some local gas stations. You might want to to call around to locate a retailer near you. Most motorcycle enthusiasts prefer this blend.) kind regards, Michael

[@chrisfix]

+Michael Myjak Thanks for the info and sharing Michael!

[@kenweller2032]

Plus it's really cheap next to Royal Purple and Seafoam.

[@mtnbikerva1]

Is this pre catalytic converters, that you used diesel? How would it work with today’s computer control engines? Cut in half for computer engine and catalytic conv.?

[@tinamcgarrah7794]

I haven't watched all the videos , but I know a fine mister bottle of water and a little naptha mixed in really used to clean up the carbon on the piston tops. Have to do it slow and when it's warm and the carbon bits out the tailpipe would show its result. Also when pulling the heads to replace them with a set of Holly heads, really was clean on those piston tops!

[@SLINGING_MUD_SINCE1994]

Great video man

[@devintran9884]

have you ever tried the water method?

[@ThisGuyIsThatGuy565]

Please try BG44k and compare it to the other fuel system cleaners

[@sirensara6341]

Please do one of these on CRC Intake valve cleaner!

[@19Challenger70]

Id like to see BG 44K fuel system cleaner next 👍

[@BOTAJELL]

Great video👍🏼 Did you test out the AMSOIL yet?

[@H2VPROEternal]

doubt it :*(

[@RandomDude989]

How about Berryman B-12 Chemtool Carburetor Fuelsystem and injector cleaner?

[@Fosgen]

Great videos mate. Could you test spraying water into air intake to clean top of the engine? My diesel works nicely after this kind of cleaning, but looking for proof.

[@hckycpa20]

Would love to see Chris's take on Marvel Mystery Oil!

[@daves8407]

Fuel system cleaners are not meant to clean the internal engine components. They are designed to clean the fuel system i.e. Fuel Injectors, pumps, the lines, the tank(minimally), the fuel rail, and regulator. I hate to say it but you were looking for evidence in the wrong place

[@MJBOGAN]

I had to scroll way too far to find someone who got it

[@johndamjohn]

the can states that it will remove carbon. that's what chrisfix was testing. and fuel system cleaner are meant t clean any part that the fuel comes in contact with like internal engine components "pistons and valves"

[@rockslide4802]

But if it removes carbon, only to re-distribute it somewhere else, what good is it?

[@rezagrans1296]

Ur comment wouldnt be here if ChrisFix wuznt generous enough to do tje vid pal heeeehehe

[@hassansabilgi3898]

It's supposed to come out of the exhaust...