Addressing your frequently asked Royal Purple questions. Will Royal Purple actually ruin engines??

[@TenzaMotorsports]

Thanks for watching, check out where all this Royal Purple started by watching my Royal purple part 1 video. kzbin.info/www/bejne/q6XaaphmqJ2VsMk PS @4:10 David misspoke and said WIX when he meant to say Fram. Any Filter with a 20 micron raiting is more than adequate. Thanks for watching!

[@frankief1007]

Been using royal purple HPS for the last 4 years in my 2012 ISF. From a Mobil 1 fan. Soon as I was introduced to this product I'll never go back. Power steering fluid is amazing too

[@patjohnston3803]

Having owned a high performance fuel company I was all set to get on here and give you some real factual information, but your friend the Engineer did a great job and really nailed it. Saved me from writing a book on this topic. It seems that a lot of people just don't know how to decide what the oil change interval should be. With modern API SN+ oils it is really very easy. You need to keep an eye on your oil and when it gets black, you need to change it. Now technically this is not correct, but for a regular person without a lab it works very well. The oil will work usually for at least 5,000 miles on most cars. BUT, some engines (Like your BMW) need to have the oil changed more often. If you have to change the oil at 3,000 miles then you just do it. When "cleaning up" an engine that was TRASHED like those EBay engines then you need to change the oil every 500 to 1,000 miles for possibly six oil changes until the oil can go 3,000 miles and still look relatively clean. Then you know the engine is very clean and you can increase the mileage between oil changes until you see the oil getting black. In doing this you CAN use a cheaper SN oil like Amsoil OE, Mobil 1, Walmart full Synthetic or Amazon Full Synthetic . The oils that meet The SN+ rating are packed full of detergents and will ultimately get the engine clean enough to eat off of. Having an engine get to the condition of those EBay engines is really a disaster in the making from severe neglect and lack of oil changes. Those drug dealers should have been arrested for car abuse! Nice topic.

[@TenzaMotorsports]

Thanks for the comment and info! I’m happy to see comments like this that will help others who are looking for this information. David is very good with all this and eventually I’ll get to that point!

[@OranthumLLC]

Pat Johnston thank you. It’s great to know that knowledgeable people still watch you tube.

[@extremedrivr]

So what shall we eat off the engine?? A nice salad with synthetic vinager oil?? Hehehe Just had to poke a little fun at your comment because it was very very correct but funny the way you put it.

[@1mropz1]

I've got older vehicles and oil almost turn black around 2k, so I just do an oil change. Some people think I'm throwing money away by disposing of oil the still has another 3k of life, but I never thought so.

[@thetechlibrarian]

Well my question would be how black? Are we talking dark burnt looking brown or More like a actual diesel car/truck oil change when it looks dark like coal.

[@ScottDreyfus]

I've put 125k royal purple miles on a 2010 mazda 6. We recently changed the valve cover gasket and checked out the motor. Everything was still in factory spec. No leaks. The engine consumes a half quart of oil every ten thousand miles. It's done that since the very first oil change. The techs were shocked at how Clean the motor was.

[@Kiddomike]

I'm now using Royal Purple on my truck. I do hope the insides of my engine will be as clean as your car using this oil. I regularly change it every 10,000 kilometers (6,214 miles) since brand new. I've been using Royal Purple for 12,400 miles now. So far, I noticed that my diesel truck idles much smoother.

[@TenzaMotorsports]

Royal purple has been good to me, i hope your experiences will be just as positive!

[@f1fanatic80]

Your cousin is the type of person who could talk about anything and you would just listen intently and hang off every word, bring him on more, i love learning from great teachers! I kinda wish I had a teacher like his style teaching all my subjects at school... just like oils, not all teachers are the same lol thanks for the video!

[@miggyrocks626]

They sound like Idahoans but im not sure. They speak very properly and are very educated class. I lived in idaho 5 years. Awesome cars in the Gem 💎

[@CindyLouise75]

This was so informative. The cutaways and diagrams really helped. You two are great together!!

[@nickhahn5412]

130K royal purple miles on my Prius in 5 years. Engine is absolutely perfect inside. Flawless. Brand new.

[@baxter37texas]

Thumbs up for the Guns and Ammo shirt. I use RP gun oil in all my guns. And RP in my car.

[@TenzaMotorsports]

I didn’t know RP did gun oil until I started having people comment it on my videos. I use Remington oil on my guns and in my car😉

[@OranthumLLC]

Thanks! If you read their magazine i am in the December 2019 issue. Shooting in the rain segment.

[@burrr1047]

Stellar video and great information. Specifically the introduction to the gentleman that is more mechanically inclined and doing a quick rundown of his work history and qualifications was something that I’ve personally never seen or heard anyone do before they start giving advice about mechanics. That alone was was enough to keep me watching this video so props for that.

[@TenzaMotorsports]

Thanks for the comment!

[@extremedrivr]

Thank you for your sensible videos. And just an FYI!! Be glad your running Royal Purple because it is just one Motor Oil of a tiny number that is trully Synthetically made. Royal Purple uses a Base IV Oil. No crude oil used in their product like Mobile 1 does. I don't trust Mobile 1's claim on their Extended Performance to be Synthetically made

[@georgiohenderson5998]

Man, i've been using RP for about 95% of my oil changes, all done at 5k or less miles. Got my car with less than 15k miles on the odo, sitting at 160k now, doesn't burn an observable amount of oil and runs like the day i bought it. Really want to tear it open just to see if it looks brand new inside like i imagine it would.

[@jonnyweber3311]

I would think you get really good fuel mileage too

[@joshuamarler1076]

Royal Purple is one of the best oils out their. Make ur vehicle run smoother like its brand new. Will I run it 10,000 miles no. 5 at the most.

[@TenzaMotorsports]

Royal purple has been good to me

[@mckx5]

I change mine every 10k, no problem. It used to say 12k service interval right on the bottle.

[@TheRichardF10]

I've tried pretty much every oil you can buy and from experience, the absolute best oil for daily or racing is Motul. Nonetheless, there are many great oils out there and Royal Purple are one of those great oils.

[@joshuamarler1076]

I have a 2017 nissan titan change my oil every 4000 miles with a full synthetic 0w20 viscosity. I started using royal Purple I just wanted to see what was all the hooplah was all about and man I'm glad I did. I used mobil 1 in all my vehicles never had a problem. But with royal purple my truck runs so smooth and has great throttle responce and acceleration. People say oil is just oil awe no it's not, I noticed also when I'm at a red light my truck actually sounds like it's off that's how quiet it is. I use also a the royal purple filter as well. Will also change it every 4000 miles people say u can go 10000, that's just me I like changing my oil every 4000 plus cleaning mY K&N air filter at every oil change. Your vehicle will take care of you if you take care of it.

[@TenzaMotorsports]

I’m glad it’s working out for you! Most of this oil hype is personal preference. But if you actually can feel a notice a difference that’s awesome!

[@stevenschembri1288]

Great video! My question is would I ever have to worry about motor oil leaking through my valve guides? I have ONLY used Royal Purple & Royal Purple HPS since I bought my vehicle (2004 Mustang GT - 4.6 V8). It is running beautifully still and I have about 115,000 miles on the car. Never any leaks at all and the car is in mint condition. I have always changed my oil religiously at 3,000 miles OR LESS each time since new. Any thoughts?

[@keithw846]

I've been running Royal Purple since the second oil change in my Chevy Avalanche 8.1L 2500 and it now 286,000 miles with no issues, oil pressure has maintained 55 psi while driving and 35 psi at idle from the beginning. I also run RP in the 4L85E trans and the front and rear diff, all are original and have never been rebuilt or opened up.. I change the oil every 3000 to 5000 miles depending on driving conditions like heavy stop and go traffic in the summer months or if I've been towing my boat during the summer... This vehicle was my daily driver for over 20 years until I retired, my Avalanche will be 23 in November 2024.. Also I run the K&N HP oil filter which filters down to 10 microns..

[@I_know_what_im_talking_about]

Absolutely nothing wrong with using synthetic oil in an old engine. I have a 98 Camry V6 that I bought new and used nothing but Synthetic oil since day 1 for 15 years. Sold it but still service it with synthetic oil to this day. 320,000 miles on the engine. Doesn’t burn any extreme amount of oil. Doesn’t smoke. Doesn’t leak. Only ever replaced valve cover seals due to age after 17 years. Perfectly normal to me. I use nothing but synthetic in every engine I own.

[@TenzaMotorsports]

Absolutely, as long as your engine has been maintained you're good to go

[@jrf3742]

Can you ask him if people should clean their engines once a year or something? I use quality oil and filters but I still wonder if I should use a high detergent once a year?????

[@flipnotrab]

Crude = ok Cred = bad SeaFoam to crankcase for 50/100 miles and watch the crud AND cred fall out of your used oil. Take a magnet to your old oil if you REALLY want to see if there is serious “cred” in your motor (then list on Craigslist and make it someone else’s problem if your magnet pulled out serious “cred”)....

[@stephenwhite5444]

Great video...which version of Royal Purple are you running that really cleans the engine? It looks like they have several different types of engine oil.

[@bluetsunami4005]

Thank you Tenza Motorsports! Switched over to Royal Purple from Castrol Edge and my engine is so quiet I can't hear it running inside or out. I have a Mazda 5 with 126,000 miles on it. It's a 2.5 L with a 6-speed manual. The gas mileage is outrageous

[@jackiechristiansen3469]

Thanks for answering questions.

[@TenzaMotorsports]

Thank you for commenting

[@4RT0119]

You said Wix Xp filters 8 Micron but on their website it says 20 micron rating

[@OranthumLLC]

Arturo Uribe yes you are right! I misspoke badly look at Fram extra guard.

[@mikeonthebayou]

My experience with Royal Purple has been positive, to the point that I wish that I’d pulled the valve cover on my Jeep before running RP HMX oil in it. When I got the Jeep(XJ w/4.0 I6) it smoked, especially when idling for extended periods. Within two oil changes the engine has stopped smoking even if you idle it for an hour or more. I’m pretty sure this is a junkyard motor but it has good compression and runs pretty good. When I pulled the valve cover off, there was sludge on the top end but only in and above the recesses for the casting plugs so that it looked like a square head instead of a recess and there’s a little grit on top of the rockers and the rest of the top end was still stained but otherwise very clean, surprisingly so. I’m guessing that it cleaned out some stuck rings and got everything freed up. Could a cheap oil have done the same? Possibly, but regardless, with the 4.0 being a pushrod engine it benefits from the zinc in the HMX formula. I also run the non-HMX in a 2009 Nissan Xterra with 106k miles and I took a peek inside the top end with a bore scope recently and was happy to see clean aluminum with no stains. The stuff works for me and if someone scoffs at my choice then that’s on them, I just know that the odds of either of my engines having an oil related problem are pretty low. Let the haters do what they do, they don’t pay for my maintenance.

[@glocktown21]

Is using fuel injection cleaner like Techron or Royal Purple fuel injection cleaner recommended for annual maintenance??? I typically always fill up at Chevron, Shell or Mobil Stations...

[@cp3ubz]

Thank you for the video. I also wonder if the guy that commented about the Lambo possibly got the oil levels wrong in the car if he did it himself. Not judging him just curious is all.

[@tateswensen8407]

I having been running RP in my challenger rt and love it. Me niece just picked up a 2014 passat TDI. some say not use Royal Purple in VW. What do yall think.

[@matthewalbright571]

What do you think of royal purple oil filters?

[@pi1797]

Very interesting videos. Personally I have not run Royal Purple in my vehicles. Don’t laugh but I usually run Castrol Full Synthetic. Had great luck with that oil over the years. I have also run Kendall Semi-Synthetic. My theory on the oil cleanliness is. I like to see a dirty oil when I do my oil changes. That tells me the oil is doing its job of both cleaning and lubrication. If I see a oil, when I do my oil change. That coming out that looks like it came out of the bottle I am curious to why it wasn’t more dirty. My thoughts about Full Synthetic oils causing leaks. 100 % agree with David. Depending on how the engine was maintained prior . If previous owner did not maintain it properly and start using a good detergent oil full synthetic that will clean all that junk out. What I do when I bought my current car. I ran 5w-20 through it for 1500 miles then switched back to my normal 10w-30. The thinner oil helped clean it. I don’t run the Royal Purple right now due to my car having an oil leak (valve covers). I may run the Royal Purple in my next car/truck. My car has almost 260k on it.

[@therobb5738]

You specified Chevy for the valve guide wear, but any specific engine? I ask because I have a 2000 Blazer with the 4.3. 178xxx miles, first oil change I did 3k miles ago was pitch black. Another 3k miles later, looking that way again. No unusual smoking or oil consumption that Ive noticed. BUT- Will/Could this happen to me?

[@TenzaMotorsports]

The older chevy motors (older than 90’s) do this the most. The newer v6 And v8’s like your blazer do not generally have this issue. Though the early 90’s 4.3 L V6 can lose a valve if run at high RPM for too long. As long as it was not too severely abused before you got it yours should be fine as long as you keep up your good service schedule.

[@therobb5738]

@@TenzaMotorsports Awesome! Thanks for the reply. The more I know about this stuff, the better I can maintain it.

[@michaelvalone907]

Would it be better to mix royal purple with a regular synthetic oil in the beginning of your switching to royal purple? And then, building up your mixture with royal purple, until you reach your engines full capacity, let's say 5 qts.??

[@TenzaMotorsports]

Best to do a full oil drain and filter then start over. If you’ve kept up on your maintenance you won’t have any problems.

[@sergiykud]

Conventional thinking dictates oil gets less viscous with heat. Motor oil apparently does the opposite ( like 0w20). How come the oil is better flowing hot than room temp if it starts off as a "0"( less viscous) and becomes "20" (more viscous) at operating temp, shouldn't it be runnier at garage temps instead of after driving around? am i thinking about viscosity wrong? is there another parameter i dont know about which explains it?

[@ikeudechukwu5018]

I remain confused as to how Royal Purple remains a mystery to many. I have used Royal Purple for 15 years. This oil is incredible. I used it in my VQ35DE engine for almost 200,000 miles. This engine was redlined every week for 15 years. The day we opened up the engine, there was zero gunk anywhere inside the engine. It was super clean. The timing chain had not even slacked one bit after so.much hard driving all those years.. How hard did i drive this car with RP? The car was modified. The response with RP was heavenly. On the top end with half a tank of gas to reduce weight, it could hang on the top end with V8 Camaros. Royal Purple helped my engine produce its naximum potential without problems. No naturally aspired V6 could hang with my car. Even turbo 4 cylinders struggled to keep up. RP was so good that l learned to formulate my own engine oil based on the engine response i wanted, how much i intended to stress the car, how quickly it helped cool the engine, etc. In Summer i would use 4 quarts of 0W-40 and 1 quart of 5W-30. In Fall/Winter, i would use 3 quarts of 0W-40 and 2 quarts of 5W-30. I changed my oil every 2,000 miles. So, my car got 5 - 6 oil changes a year. I consider engine oil a coolant. It helps the radiator to work better. Fredh oil cools the engine well. I have a strange test i do with oils. RP beat Mobil 1 in my test. The only Mobil that met RPs performance was Mobil 1 EP. All Mobil 1s are not the same. Mobil 1 made for European cars or Mobil 1 EP, are as good as RP based on my weird test. I would stay away from the plane Jane Mobil 1--- was not as good as RP. RP also makes your engine quiet. After 15 years and 200,000 miles, there is nothing anyone can tell me about RP. I love RP. And their injector cleaner is amazing too. You do not need to add too much in your gas tank because it is very powerful. 1/4 of a bottle should last you about 2 months with clean air filters. All my cars use my personally engineered oils. All my cars get a minimum of 4 oil changes every year. RP is amazing oil. The last time i used an oil that good was non-synthetic Castrol GTX. This is another solid oil i have used for almost 30 years on a 1.6 liter engine with 340,000 miles. The engine of this car has never been removed in 30 years. Does not burn or lose oil. It is driven hard. Still uses original timing chain and guides installed 30 years ago. Still has original head gasket.

[@MrBiteus]

Did an engine flush and multiple oil changes on an old turbo diesel Toyota. I got lots of sludge out, and then as soon as I started getting cleaner oil the head gasket went.

[@TenzaMotorsports]

Like we stated in the video, if your car hasn't been maintained then things will fail. Any SN plus oils would have done the same if the car wasn't having its preventive maintenance done.

[@MrBiteus]

@@TenzaMotorsports I had just bought it and the rest of the car was well looked after, so I took it for granted it was serviced as he said. It was great after the heads and injectors were done. You live and learn.

[@romankartsev220]

Not sure why a lot of people are talking trash about RP. And they do not even know that RP has 3 different levels by the way. I use RP XPR and car runs a lot better and smoother than on any other oils that I ever used. If you are not cheap try buying Royal Purple XPR and you will feel difference right after your oil change.

[@TheBigken32]

Can I use royal purple in my 2004 FORD Expedition Eddie Bauer that has high mileage?

[@TenzaMotorsports]

As long as it’s the correct oil weight. Yes!

[@DiscipleofChrist101]

I have a 2016 Honda civic ex-l 1.5l turbo with 65,500 miles. I've been up to date with maintenence. No issues so far. Is it safe to run Royal Purple?

[@TenzaMotorsports]

So far I have been VERY happy with Royal purple. In fact I just recently swapped Royal purple XPR into the car.

[@patriotfury4013]

Wix is a great filter however it does not have an absolute filtration at 8 microns. There wouldn't be enough oil flow through the filter if it did.

[@OranthumLLC]

Nic Longo Um..... You are right... and wrong. Absolute filtration at 8 microns does not exist in a wix filter Nominal filtration at 8 microns does exist but not in a wix filter. Fram has nominal filtration at 8 micron and it has plenty of oil flow. Do you actually think somebody could sell a filter that did not flow enough oil when clean? Filters are rated for both nominal filtration ( the average particle filtration at a given particle sise.) And capacity of filtered particulate before they become flow restricted. So as long as you don’t exceed the filters life it WILL flow sufficient oil at its rated particularly sise.

[@willdebeljak7062]

Hey i have a steel gray 330ci that looks just like yours when you got it. Planning on racing it. Recommend anything? Bought it from spec e46 director.

[@TenzaMotorsports]

I have tons of tips and pointers if you want to message me on Instagram @tenza_motorsports we can talk more In detail.

[@SavageAudits]

Excellent video!

[@TenzaMotorsports]

Appreciate the support!

[@EricErnst]

.. so the guys bitching about sludge dripping on to your bearings would rather leave the sludge in the engine? I like your approach. Get that shit out if there and see what mileage it gets cleanest.

[@conductorjohnmthtrains2239]

Just switched to RP 5w30 full synthetic in my camaro, hope i like it., noticed oil pressure fluxuates slightly but I’m sure it will settle in, i hope

[@XanderMukbang]

How’s it been?

[@bhcrls1]

Excellent!

[@TenzaMotorsports]

Thanks for the comment!

[@HectorGarcia-ww5do]

Thanks for the information I feel on Roal Purple but should keep use this oil after my engine is clean will it strip my gaskets or harm the engine if its use to long?

[@TenzaMotorsports]

It will not harm the engine. Old gaskets may begin to leak, not because the Royal purple damages them, but because they are old.

[@HectorGarcia-ww5do]

@@TenzaMotorsports thanks I switched out the oil in my car 20k when the warranty when out & Dealer stop doing free oil change I have 42k now if noticed I don't have burn off with Roal Purple & the engine is Quite thanks again

[@hinahanta]

That was a damn good video.

[@TenzaMotorsports]

Thanks for the comment!

[@markwarnberg9504]

Thank you for a good video, "FOLLOW THE SEVICE SCHEDUAL AS STATED IN THE OWNERS MANUAL!" I would like to point out that pretty much ALL NEW CARS come with a Group lll Oil, the brand depending on which oil company gives the best deal to the manufacturer, useing a Group lV Oils will not improve engin performance! Everyone has their Brand Choice and that is fine, but do not think that by useing a Group lV expenscive oil your old Chevy/Ford/Dodge/GM is going to perform like a Ferrari!

[@TenzaMotorsports]

Thanks for the comment. You are exactly right!

[@shaynehuber3426]

I'm just wondering I drive a 2002 Pontiac Sunfire se automatic it take 3 quarts of oil so I used two qt of Royal purple oil and 1qt oil in to my engine will it's running alot better and I used Royal purple catalytic converter cleaner and Dura lube catalytic converter cleaner I think Royal purple and Dura lube should work together

[@joerutkowsky3261]

So how do you tell if the oil is a cleaning agent oil. I would like to use royal purple atv oil in my atv but it’s an old atv and don’t want it to start smoking

[@TenzaMotorsports]

honestly, unless your machine is super old and uncared for, it’s best to stick with the oem recommended oil and schedule.

[@flifishun7]

I have a Scion xB with the 2z-fe engine that is know to burn oil. The holes in the pistons below the oiler rings were designed wrong, clog up, and eventually clog up the rings causing the oil to burn. I got the car with 75k miles and immediately switched to Royal purple 0-20 and a short interval oil change. I'm continuing to use this oil and wix xp filters hoping I can stave off the oil consumption problem.

[@williamschuman4951]

Royal Purple HPS best oil ever and filters too, the guy who had oil problems with his home built yugo kit probably had a garbage engine to begin with, just saying motor on.

[@TenzaMotorsports]

I’ve heard good things about their filters. I might look into them, thanks for the comment!

[@williamschuman4951]

@@TenzaMotorsports No problem and one good thing about RP filters they only sell the one filter to fit your engine the best one they can manufacturer so you don't have to choose, which makes it easy for most people, not like fram we're they offer the crappy filters and their best.

[@ricktaylor3748]

Royal Purple is THE worst oil on the market. I saw that garbage RP ruin an entire fleet of big block 496 Chevy engines. When we changed from regular Mobile 5000 oil to Royal Purple. Our engines started using 2-3 quarts per day. Several engines locked down completely. I wouldn't use Royal Purple in an old wore out lawnmower. Seriously, purple oil ???

[@JohnColeman-ul5rj]

Wow "some" of these questions are just completely stupid. I have used RP in every vehicle I have owned, except Honda. Honda does not like RP in my experience. Mobile 1 for Honda. I know when my head gasket blew on my 97 Sierra cause of a factory flaw of the plastic clip that held the heater hose to the intake manifold. At 136k miles of running RP the cylinder walls still had the cross hatching in the cylinder walls. I was sold forever. I mostly use RP in GM vehicles, I start using it immediately, since I buy all my vehicles used. Never once had an issue with the oil. I'm not going to buy a 200k mi car and put a high detergent oil in it and expect miracles.

[@TenzaMotorsports]

Thanks for the comment!

[@gjkMN]

@tenzamotorsports Question for David (kind of off topic): you mentioned being familiar with the warn valve guides on chevy's. I really wanted to buy a bmw x5 50i with the n63 engine, but got scared away due to people's experience with the valve guides and using excessive oil. Do you know much about that tissue with that n63 engine? is it a big deal, one that can be fixed, will it be reoccurring? So many opinions on the internet, i don't know what to believe to be true.

[@pranays]

If your concerned about the recommended weight oil damaging your engine then you have bigger problems than the oil.

[@DylanTeeters2]

I got a 01 Silverado 5.3 bought it from a dealer that had 79,000 miles and now it had 105k and I just changed my oil yesterday and ran to you think it will be alright?

[@TenzaMotorsports]

What oil did you have in there? that a long amount of time.

[@audechilderes9402]

Lol I've used royal purple on my 3.0L camry never an issue. But oil changes was every 3k, and gonna use it on my supercharged camry since I dnt think my camry is amsoil worthy lol.

[@joelrodriguez7038]

Brother Mobil 1 or royal purple, I use Mobil 1 long time but I do research and the most people say royal runs better, my question is , is that good royal purple?

[@Tiffer_77]

Royal purple way better Mobile 1 is weak

[@logicalguy488]

You are wrong about the filter clogging up then blowing apart. If you have any halfway decent oil filter if the oil pressure reaches the bypass valve max pressure it will open and the oil will just flow unfiltered. If you have a filter that blows apart you have the cheapest junk filter that you should not even use in your lawn mower.

[@bobg3034]

NOT all the oil gets filtered that flows to the filter! Only the oil that can flow through filter media gets filter the rest is bypassed. You would need a filter much larger the filter 100% of the oil!

[@TenzaMotorsports]

I’m not sure what you’re talking about. Never heard this.

[@nickv4073]

My motto is, if you do your oil changes on time, you will never need something like Royal Purple.

[@BEINGOOD77]

200,000 mi. Will it help this car

[@karenchristiansen46]

First like and first comment! I win today!

[@TenzaMotorsports]

Congrats! Thanks for the support!

[@karenchristiansen46]

You're welcome!

[@BEINGOOD77]

Day driver car Royal Purple

[@miggyrocks626]

I'm wondering if this is the oil Royal purple that will eliminate my knock retard on all 4 cylinder Cobb tuned cylinders 1-4 give -2.50 knock retard on all cylinders Wondering if RP will clean carbon deposits. Change oil like religion Castrol European 2015 Audi S3 105K miles ?

[@CheerupA1]

Sure, he has a degree but has he watched as much car KZbin as me???

[@JayzBeerz]

You're car guy and don't know that Asmoil, Pennzoil Ultra and Mobil 1 are the top 3 oils? WOW! Royal purple is like 6th or 7th on the list.

[@TenzaMotorsports]

What list are you referring to?

[@ajmedeiros77]

😂 mobile one

[@sabrehawk-427]

I would not have a engine that runs a oil pump off a chain .the best is a rotary pump that runs off the front of the crankshaft WTF bmw