Does Blue Devil Rear Main Sealer Really Work? Here's a Quick Review

[@BuildYourOwn]

🚘🔧 Are you tired of dealing with rear main seal leaks? Check out our latest blog post on using Blue Devil Rear Main Sealer to tackle those pesky leaks and extend your engine's life! Read now: www.buildpriceoption.com/sealing-the-deal-blue-devil-rear-main-sealer/

[@chief9161]

Added to my 4.3 vortec 2000 Chevy blazer and after 210 miles, the leak is gone! IT WORKED FOR ME!

[@officeproductions8769]

Added a bottle and 150 miles later oil level is the same. I never had leaks on the ground just the bottom of the car covered in oil and a slight oil burning smell that both have since stopped. Fingers crossed

[@johnnyc4738]

Holding up?

[@TvrkishOutlaw]

Update

[@johnbarrows1499]

Update on my experience with Blue Devil rear main seal use on my car. As other people have said, I used the whole bottle and not much happened for like the first month or so... Then I had to take a small trip of over 100 miles, driving at speeds of over 70-80 miles per hour. I got to my destination and sure enough, a big spot/leak on the ground. My car had sat for a few days while I was visiting family. Before leaving I checked my motor oil and I was down about 1/3 of a quart. I topped off the oil and drove back home over 100 miles. Once home the car sat for a day. I checked my oil before driving my car to work and the oil and transmission fluid was full. I’ve parked my car where one would notice any leaks and presto! Blue Devil has resealed my rear main seal. I know this is temporary but, it gives me time to shop around for a great mechanic... This is my story. My previous post was not positive but, it seems to have finally worked on my car... good luck with your use of this product!

[@AtOneMent1844]

thank you for sharing

[@ianjadiel386]

you all prolly dont give a damn but does anyone know of a way to log back into an instagram account..? I stupidly lost my password. I appreciate any assistance you can give me.

[@ezekielfranklin7387]

@Ian Jadiel Instablaster =)

[@NoWr2Run]

It might not be " TEMPORARY ".

[@seans5008]

@@NoWr2Run what do you mean?

[@FairScale-tx1qv]

I just emptied my entire bottle a few hours ago and been praying for the best results. 1988 Volvo 240 is known as a great running car but leak problems changes all the perspective. I'll see in a few hundred miles later.

[@BuildYourOwn]

A leak has a way of doing that. Thanks for watching and I hope you get some value and results from this product. Keep me updated.

[@becca0984]

Did it work

[@southern04man]

This stuff works. My rear main was leaking bigtime. After using this product i went from a quart a week to a quart every couple months. Damn good product

[@butterfliesarecoolfightcps645]

Normally how often should we refill with a quart?

[@JakeNaughtFromStateFarm]

@@butterfliesarecoolfightcps645 If you change oil according to manufacture recommendations, you’ll burn probably a quart to a quart and a half.

[@joemartin7017]

Curious in long term status? Still good to go, any new problems after adding the sealer?

[@Thecrowmotorsports]

So, now that a year has passed, have you had any other problems???

[@blixksdumsptbm4770]

any issues

[@markw5805]

Put 2 bottles at 225k in my Toyota 5.7 V8…5yrs later and still going strong 305k. The first bottle reduced the leak to nothing. But after the first oil change i was losing oil again. So I put in a second bottle and it did the trick.

[@nssonslimited4916]

so is it better putting two bottles in instead of one?

[@MyAquaforce]

@@nssonslimited4916 please let me know what happens I put one and reduced the leak to drops before it was puddle so I am happy but I am thinking on putting another one maybe asking the manufacturer

[@Engineerboy100]

You have finger prints on you phone camera lens. Thanks for sharing.

[@BuildYourOwn]

Thank you!! And thanks for watching!!

[@brettgregory6667]

It's been a few years, how'd it turn out? My rear main seal (07 Ram 5.7) failed on a small road trip of 85 miles, and I was down 2 quarts of oil by the time we got of the highway. The crankcase was topped off before we left home. There were no obvious signs that it was building up to an all out fail. I grabbed a bottle of the Blue Devil rear main sealer (very skeptical, but kind of desperate) at Autozone and 2 quarts (Mobil 1 synthetic 5-20; that's what I already had in there....$$) poured it in and hopped on the highway. It seemed to thin the oil out at first, and was leaking like a sieve! I smoked out the entire expressway behind me and had to get off at the next exit. The exhaust was covered; the leak actually coated parts of the muffler along with the rest of the underbody. There was a steady stream of oil coming from the engine while idling, so I decided not to chance it and have it towed home while we enjoyed our visit for a couple days. Two days later (today), I get home to promptly check on the truck, and the oil level was the same as it was when I parked it to be towed (down 1 qt), so I ran it for about 10 minutes. I lost approximately, 1/2 C of oil and then the leak seemed to slow big time. I shut it off, topped of the crankcase with a quart of Lucas Synthetic Oil Stabilizer, then jacked up the front end to clean all of the frame drip and get a better visual of the source (I already "knew" it was coming from between the bell-housing and the block, but had to be sure it wasn't a head. There was no oil in the coolant that I could tell). I ran the engine for 30+ minutes while watching it like a madman from every angle and not only was it not leaking full stream like a sieve, it wasn't even collecting droplets of oil at the seam. No leak at all. *Side note: Prior to this, the area was always a little wet but never seemed to leak in the driveway. I would go through a quart per 6-10 weeks. I lowered the truck while running, cycled the engine as if I was driving, then idled at 2500 rpm at 5 second intervals... There was now, the usual amount of oil collected at the weep-hole, before the eventful blow-out. I let it run for a few more minutes and shut it off. No drops on the ground. It seems to have DRASTICALLY reduced the leak. I'm truly amazed, but it's still the first day and I'm concerned that the initial intensity of the leak could spring on me while driving. I haven't driven it yet, so I'll try to update this post after a couple of hopeful & anxious days.

[@farrahlainek9178]

Update?

[@brettgregory6667]

@@farrahlainek9178 My rear main seal was way too far gone- The product absolutely impressed me, because it stopped the leak (at idle) for a couple days. But when I took the truck on the road (within a week of blowout incident) and gave it a little hell, it breached right open and was leaking like a sieve, once again. Fyi, I was on a dirt road, didn't go faster than 40 mph, and I did not get far. Truck in shop as we speak. Blue Devil, IMO, should be added when only a slow drip is present.

[@brettgregory6667]

@@farrahlainek9178 It turns out- my seal was actually detached from the bracketry. Likely due to faulty installation or too much pressure in the crankcase.

[@NoWr2Run]

@@brettgregory6667 THANK YOU FOR THE UPDATE, SIR.

[@justincase51]

A $20 gamble is worth it in my mind.

[@BuildYourOwn]

Oh for sure it is!

[@nolandyer8336]

@Luna Verret fake

[@GermanShepherdDaphne]

About to do this today. Just got mine in the mail. Ordered from Amazon and putting this in my 2009 dodge ram hemi 1500

[@BuildYourOwn]

Thanks for watching and keep us posted with your results.

[@YoungAmzn]

how did it work?

[@joemartin7017]

Did it work? Did it ruin your engine?! I need long term reviews of this stuff!

[@AlexanderChun-xz1mv]

Did it work for transmission leak as well?

[@youandiryan]

This stuff is absolutely awesome to tie you over until the problem can be fixed. They say it's a permanent fix but I say it's just a Band-Aid until you have the money or the time to repair properly. I had a small leak in my accord, right around the observation port area in my vehicle, It's a six-speed manual, so there is an observation port where you can pop the lid, and you can physically see inside where the clutch is and you can see the rear main seal. Mine was leaking. But I am working this week and I just do not have the time to do it until next week. Because it requires a transmission pull. I'm more than capable to do it it would probably take me a day. But like I said I just don't have the time this week. Anyways I put this stuff in my vehicle just a very small amount, not what the bottle said. But I put a smaller amount in. And drove for about 100 km on the highway. And sure enough it worked absolutely beautifully. I have no more leaks. But like I said to me this is a Band-Aid because I'm a car guy and I will properly fix it. Highly recommend this stuff

[@michaelhuckabee2344]

Those T5 volvo motors are notorious for getting clogged pcv breather valves which cause crankcase pressure, that pressure will force oil out of the motor. Try changing your pcv breather valve as well. I think it’s underneath the intake. Maybe you’ll get the leak to stop, cheaper than a rear seal repair. Cheers

[@Gallo-ot2om]

I wonder if this will swell up all the other engine gaskets and maybe start a leak somewhere else

[@jamesstyres9133]

I used a product to help my 4.7L V8 stop burning oil. It worked good, oil level stayed put the whole 5500 miles. Go to change my oil and it’s two courts low all of a sudden and one I’m underneath I see my rear main seal leaking! I agree with this theory you have.

[@Super-J10]

Thanks for posting.... mother in law just gave me her old car for free and Blue Devil is calling my name !!

[@BuildYourOwn]

Let me know how it works for you

[@adamwhitfield5571]

Okay so the comments suggest that it eventually catches most of the leaking. But my question is, what are the negatives for using it with the rest of the engine oil? There are ALOT of small orfaces and lines and pumps and such that the oil must flow through. So does (by it's very nature of sealing) it effect anything else with the engine?

[@TVCColin]

Not really, this works by swelling the seals and orings in the engine. It would take a lot of swelling to block oil all together.

[@Oxcotton09]

@@TVCColin it makes it soft tho. Overtime, that can cause issues

[@dsrocks6905]

​@@Oxcotton09 usually it leaks because it has dried and hardened. It shouldn't cause any issues aside from slightly lowering lubricity, and you should only need to use this product once or twice so realistically it won't damage anything

[@shelby50411]

i used it on 2008 hyundai elantra..it was leaking oil and this stuff almost worked instantly.. ..its been 2yrs and leak still fixed...do in my case it did work

[@blu101-o3t]

I tried this stuff on my 07 Audi A4 & yes it did slow my oil leak down

[@samedichom6591]

Did u get a check engine code from the leaking rear main seal?I'm think to do this to my 08 audi a4

[@bmddlton]

It 100% fixed the leak on my dad’s Mercedes S55 AMG. He had to use two bottles because it holds 8 quarts of oil.

[@BuildYourOwn]

I was thinking about throwing another bottle in there... LOVE the S55 by way! I regularly look on Craigslist looking for them in my area lol. Thanks for watching and commenting!

[@bmddlton]

Build Your Own look into the hydraulic suspension on the S55s if you decide you might want one. They are very expensive to fix and all of them have leak down problems!

[@robertbanks2727]

So did two work

[@robertbanks2727]

So did two bottles work

[@normansmith4086]

I tried it day ago and I noticed leak slowed and next day no oil spot well worth trying for $15

[@richardholmes7199]

I just used this on my 1977 Buick Park Avenue. The leak stopped completely.

[@johnnyc4738]

How's it holding up?

[@richardholmes7199]

@@johnnyc4738 I had to add a little more. The leak has stopped so far since then.

[@johnnyc4738]

@@richardholmes7199 Thanks for the reply. 🍻 I just got my 4th Expedition (an '05), but this one is a whole different animal from the ones I've owned before. I'm making headway, but this stuff seems pretty damn good, so far.

[@jerryhamptonjr73185]

It worked for me also, my BMW X5 was leaking from the rear main seal, and like you said it's just a band-aid... I'll be saving money to take it to the shop to get it fixed. But awesome stuff to slow the leak down so you can save some money to actually fix it. Great video 👍

[@kevinbryant6459]

Thats exactly what im hoping for

[@shelby50411]

Decided to risk $15 to maybe save $800 repair....its an old car with 170k on it....so i just added 1 bottle of blue devil rear main seal...will let u know how it goes

[@BuildYourOwn]

It helped my leak significantly. Let me know your results. Thanks for watching.

[@vicklal6412]

So what up ? Did it work ?

[@shelby50411]

hi so far it has not leaked and it has been a couple months

[@shelby50411]

well its been about 6 weeks not 2 months but yes so far the leak has not come back and it was a pretty significant leak...

[@shelby50411]

and yes its worth risking only $15 as compared to spending 700-1000 for a shop repair....if it works great...if not then you can either dump the car or spend 700-1000+ to have it fixed

[@Dedypower33]

Had a pretty good leak on a 99 accord i picked up for dirty cheap.. Did an oil change used Blue Devil and some 15w40 .. Shit stopped completely.. Think it was a mixture of the BD & thicker weight oil...

[@BuildYourOwn]

Thanks for sharing your experience

[@tousshong9438]

Seems like this products is to help rejuvenate and old worn rubber seal but if the seals are torn or mechanically defects it's probably not going to works. However, many people on KZbin have been giving this product a thumps up!

[@jesusreyes4787]

The blue devil is the beast I got 2004 Ford ranger I had real main sail leak I got recommend to put a real main stop leak I drove for couple days I went under pressure watching in dry off in by that evening after a driver 4 /25 minutes yes dry like the way u aspect no more leak I recommend to anybody had the same problem ☝️😎

[@Tru580]

How’s it going now if you still have it I got the same year 3.0

[@paulhowell1262]

It worked well on my ‘04 Suburban.

[@ThatStevenLouis]

Maaaan I just found out it's the rear main seal on my '03. Going to grab a bottle now

[@briansturgill5905]

You can used 2 bottles. I used 2 and have seen nothing in years! Great stuff.

[@BuildYourOwn]

Good to know!

[@shelby50411]

Correction 25 miles of driving....leak has stopped

[@BuildYourOwn]

Awesome!! Glad to hear it worked, thanks for the update!

[@chadchaddingtonflexington8415]

It works but expect to buy more than 1 bottle if its for your daily driver. It sealed my rear main seal leak for about 2 months before I had to put in another bottle

[@BuildYourOwn]

I don't think the BlueDevil products work at all. This was my first video. I have tried BlueDevil other times since. I have a 5-video playlist of all my BlueDevil adventures! kzbin.info/aero/PLZPFVgOzDxzWNDRWpQNrlyIiL9NaJ7fqN

[@heididuncan601]

We just put this in our 2008 honda Odyssey. It has a very small leak in the rear main seal. Hopefully it works for a year until we get another tax return

[@NotAnybodyElse]

I wonder if this would work inside a manual transmission. My transaxle is leaking Synchromesh. I've replaced both axle seals, and I still have a small leak, which I suspect is from the input shaft seal, which you have to take apart the whole transmission to replace.

[@BuildYourOwn]

I just recently used and did a review on the Blue Devil Oil Stop Leak, that might work for you kzbin.info/www/bejne/e2Srl4Cve7GkbLc

[@NotAnybodyElse]

Thank you, I'll check it out right now!

[@n3d.studio]

I tried this on my Hummer H2, it worked. Stopped the leak which was pretty bad, not a drop. But after about 2000 miles, it's leaking again. And pretty bad while it's running, as bad as before. Can you put this in again like every 3k miles, every oil change? I know it's going to need a new seal. Thinking just to get me by.

[@joshmonaco6170]

Hey I know this comment is over 2 years old but just in case anyone else comes along with this question, it says on the bottle for best results to add in with every oil change

[@n3d.studio]

@@joshmonaco6170 I tried it 3 times and gave up. I'm putting about 1 quart a week in. I can't tell where it's leaking because it's leaking so much. Need to get it checked out.

[@katmanluke7187]

@@joshmonaco6170 I have a new bottle & it does not say that. Claims permanent no need to add another at changes.

[@jcwestside]

I used some today on my Suburban. I'll let you know how it went!

[@BuildYourOwn]

Let me know. I have never had luck with the products and have several videos

[@3030hp]

how did it go?

[@williamdarnell8770]

So you have never had luck with the product then why are you telling everybody to use it I'm definitely confused now

[@edgara4361]

What about putting in a second bottle? any downsides?

[@BuildYourOwn]

A second bottle may be worth a try. I just didn't want to put any more money into the car and needed a cheap solution.

[@MM-je1tg]

RIGHT U WILL HAVE TO PUT MAYBE A LITTLE OIL FR TIME 2TIME..NOT LIKE B4!

[@dannylay7965]

I wonder if a combination of the sealer and thicker oil would stop the leak?

[@BuildYourOwn]

The answer for me has always been just to fix the repair.

[@becca0984]

Thanks for this review. The guys at oreilly know me as the frequent shopper for oil lol... Today one finally suggested this product I was a little skeptical but I think it's worth a try even a little help is better than none... Just bought a 09 vw cc in January I've already put way more money than I can afford so maybe this will help until I can get it professionally fixed

[@BuildYourOwn]

Yes, old European cars will constantly be costing you more than you intended to spend, but we love them anyway!! I hope this helps you make less trips to oreillys

[@becca0984]

@@BuildYourOwn no doubt... Car had great reviews and I even took a mechanic with me...guess that's just life when you can't afford a high note for a new one under warranty.

[@danielreeves4799]

Should I drain some oil out before adding it?

[@BuildYourOwn]

I didn't. I think you just need to follow the directions, which I don't think calls for draining any oil.

[@stevestoves2292]

8oz of fluid isn’t going to hurt unless you already overfilled with oil.

[@steveshih4622]

Thanks. How bad was your leak? And how much oil do you put in each time? Thanks again.

[@BuildYourOwn]

The car burned through a quart pretty quick... it slowed down to needing a quart about every few weeks. I was hoping for a better result (others have gotten it per comments), but not bad for the money versus the fix. Hope this helps.

[@tab7743]

If you rear main seal is leaking will it cost smoke from the exhaust

[@warriormanmaxx8991]

Answer: "smoke from the exhaust" does not cost anything !!

[@ddemier]

How did this repair hold up over time? Update please.

[@BuildYourOwn]

Still leaks a little. Add about a quart a month now. Big improvement. I think I'll maybe add another can of blue devil and update...

[@davedrace9959]

I had a toyota with a very bad front seal oil leak. Bad as in leaking a quart per day, driving about 50 miles. I poured blue devil in the engine as per instructions and almost immediately the leak stopped. That was three years ago with no sign of leaking anywhere in the engine

[@gusparra4037]

dave drace car still running or how long did it last during that time???

[@davedrace9959]

@@gusparra4037 The car is still running and uses less than a pint/month now. In the past, ive always used sealers that uses chemicals that swell the seal causing the leak to stop. these work pretty good but if the leak starts again, I find this only works once.. I was suspicious with the blue devil but tried it out of desperation. The leak was very obvious but I noticed the leak slowed down before I finished pouring it into the engine..Im happy with it. Its worth paying alot for the product since the $ i spent for oil easily exceded the blue devil cost..Try it, it comes with the guarantee.

[@gusparra4037]

dave drace thank you man I’ve also tried it for a not too big leak but it’s slowing dripping now hopefully completely

[@GbodySS_LsX]

I used it on my ls swap it was leaking like an 0z a day nd I added it nd all of a sudden never dripped again.

[@Ajaxaxxess]

Hows it holding up 2 years later? or how did it hold up?

[@BuildYourOwn]

I just did an update video kzbin.info/www/bejne/oqOclYuNpq-Wfdk

[@dsrocks6905]

Youre likely looking at a clogged PCV system on those turbo Volvo engines. Put a rubber glove around the oil fill port with the cap off and see if it inflates when the engine is running. If it does you need to service the crankcase ventilation. Itll pop cam seals, main seals, and cause you to consume oil. Once you fix that, then run that sealer through and youll be golden

[@shelby50411]

Added product to car 4/13/19 and as of today significant leak stopped.....in my situation product worked after about 15 miles of driving...obviously every situation is diff but in my case it has worked so far after 1 week....will see how it goes long term

[@danielle0918]

How is it going now?

[@outdoorrelaxation5511]

Ok but the big question Is what's it doing to your oil inside the motor .... it cant seal leaks which means thickening up without effect the oil

[@BuildYourOwn]

If you're that worried then do the actual repair of the leak. Problem solved.

[@saraflores9601]

The seal leaks because it is hardened up. Blue Devil softens the seal material so it grips the crank better.

[@katmanluke7187]

I've not been able to see if product actually works due to low oil pressure issues appearing after first 50 miles on my '03 Acura 3.2 V-6. Which it's NEVER had. Blue Devil claiming it doesn't affect oil pressure seems suspect since the issue is fairly common. Strangely didn't appear on my car for first 50 miles, or when cold. Blue Devil support suggests my thought which is try a fresh filter to hopefully improve flow, even if it is only halfway to change interval. They did say the product can dislodge buildup which could lodge in filter. Worth a shot. They claim even though the 8 oz bottle treats 8 qt capacity engines that it's fine to put full 8 oz in smaller engines w/lower 4 qt capacity like mine? It stands to reason if your car is in vicinity of 1/2 the 8 qts it'll treat, I'd highly advise not putting full bottle but instead say 1/2 to 2/3 of it. It may save headache I'm dealing with. If filter doesn't solve it I'll have to drain a full sump of synthetic only halfway to change interval & will do an Amazon exchange to try again not full bottle. I've only been able to drive say 80 miles & not gotten full benefit due to these pressure issues. Comment here so I see in notifications if you'd like an update.

[@NoWr2Run]

YES, UPDATE PLEASE, T.Y.

[@johnhora4644]

Does it gum up the oil pump?? Considering using product until I read this. 2 4 Honda v-tech motor 290,000 mi.

[@johnbarrows1499]

doesn’t work! I put this product in my car two weeks ago and it still leaks...

[@johnbarrows1499]

After a month the leak has lessoned some. I now have about a dollar bill ripped in half leak that is staying consistent. The leak was larger when I first used the product. I’ve used about a half a quart of oil over my last oil change. I have about 700 miles until my next oil change. So, to be fair, Blue Devil did slow the leak down. It’s my in city, go to work car... Maybe I’ll use it again after my next oil change...., I’m being a cheap ass and don’t want to spend the $700.... to fix it right.

[@IntelTV]

@@johnbarrows1499 About to buy it for an 02 mustang I Just bought, hopefully I get good results.

[@Grapes2wine-MJK]

@@johnbarrows1499 if it leaks like that in the city, wait till you actually get going down the freeway. You'll freak out from all the oil dripping

[@lexxsmith7027]

Do I need to drain my oil first

[@NoWr2Run]

NO

[@shelby50411]

Ok...how much oil do u have to add now? How often?....still leaks right?

[@positv333]

slows leak down that's it but helps a lot

[@jwelch1027]

Very helpful I just need it to last a few weeks to save up because don't have the time to do it myself smh

[@jeepsblackpowderandlights4305]

Have an 89 Jeep Grand Wagoneee. The amc 360 5.9 liter engines are notorious fir leaking in the rear main. Mine leaks so bad i had to fabricate to a thin steel pan above the leak as it was dripping on my exhaust dont wanna start a fire or see smoke like i was. Ive tried stop leaks and that lucas stuff thats like thick honey.. didnt do anything. So i got this hopefully it works. At least some. Im going through a quart of oil every 300 miles lol. I attempted to do the rear main seal myself but i couldnt get the upper half out. Only the lower half and it still leaked with the lower half replaced.

[@AtOneMent1844]

thank you for making this video

[@BuildYourOwn]

Thank you for watching

[@shelby50411]

I have a 2008 hyundai elentra leaking significantly atvrear main seal....not sure this would work for bad leaks?

[@BuildYourOwn]

Mine was a pretty bad leak and it toned it way down. But that was my experience. Hope this helps.

[@warriormanmaxx8991]

Try the product to find out. No one can answer the question for sure.

[@Homegrown_Nugz]

If didn't fix the leak cause. It's coming to a seal change. I used a lighter weight oil. It cause it to leak. I already changed the head gasket and engine flushed. My buick has 210,000 plus miles. I was impressed how quick the fix. 1 month. Later and not a drop of oil yet...

[@kimmyliu5509]

My Audi A4 B8 (2009) had a rear main seal vacuum leak, causing check engine light. Originally there wasn’t any oil leak. But today after 140mile of driving, I noticed that my car lost quite a lot of oil. Not to a point that triggers the low oil warning light but it’s definitely quite a lot. Based on your experience with this product, do you think it can slow down my oil leak? I heard that the way VW/Audi rms fails is the sealant of the rms broke apart. I don’t know if blue devil fixes this type of rms failure. Please let me know.

[@radicalnrk12]

I have an Audi A4 2012 I would like to know too

[@Ryanbell1361]

Just had my 2010 Passat 2.0T ream main seal done at the dealership. Cost was $1700 before i haggled down to $950. Its pricy but worth it

[@Ryanbell1361]

@@kevindoran4938 85k miles. I went Camry. Not planning on going back

[@goclunker]

@@Ryanbell1361camrys are notorious for rms leaks😂

[@chedamartis798]

I'm about to buy a 2011 Mercedes E350 Bluetec and I've read that Rear Main Seal replacement and Oil cooler gasket are the two most common major failures. I'm wondering what you would think of using a leak stop like this as a preventative for a car that has been know to have a bad gasket. Do you think it might prevent a problem, or might cause a problem? Should I just wait and "don't fix it if it ain't broken"?

[@BuildYourOwn]

Here's what I would do: I would leave it alone. If it's not leaking, don't mess with it. Since you know of the issue, try and be financially prepared should your car develop the issue. And if it does, PLEASE go to the dealer and not some guy who "thinks" he can work on your Mercedes. Hope this helps

[@DatCarGuy350]

will it fix serious leaks? Can you apply it several times?

[@Ajaxaxxess]

thats what i was wondering, why not run another bottle through it. right?

[@LovenotHate130]

I’m going to try it because I’m losing oil

[@theduralander2340]

“A hundred miles or thirty minutes..” this dude out there driving around at 200mph in a Volvo 😂

[@Chris-zv9wl]

Appreciate the video

[@kathyruuska7941]

It works.

[@positv333]

been using this on my 96 rav4 since 2015 because the rear main seal started leaking 2wks after i bought it and it significantly slows leaks after driving around for a wk or so way better than putting a quart in every day or two, my engine barely holds any oil already and burns the hell out of it so this stuff is great adv auto is the cheapest auto zone just ripped me off on like 18 dollars instead of around 11 or 12 and i see sales on it occasionally 5 months to a year in it'll start leaking more depending on amount of use i just dump another bottle in and go

[@BuildYourOwn]

Thanks for sharing your experience; that was pretty much my results.

[@gerrywilson9162]

Just add another bottle

[@AtOneMent1844]

that's what I was thinking.

[@SmokyMountainStarlight]

thanks im about to try it! 😊

[@BuildYourOwn]

Did it work?

[@SmokyMountainStarlight]

@@BuildYourOwn Still monitoring it, I think it has definately slowed it, still leaking a bit but then I'm not sure if I've driven it 200 miles yet. But it seems to be a little better so far! I will try to update in a few more weeks.

[@BuildYourOwn]

@@SmokyMountainStarlight I wish you luck with that. I just went ahead and replaced the valve cover gaskets in my truck so my oil leak is solved kzbin.info/www/bejne/n6fVZJefdqiIl6s

[@bryanmiller5074]

Never put additives in a Volvo. It's in bold letters in manual.

[@kingnutt3192]

Does not work with synthetic oil

[@smartyrdumb4681]

It says on the bottle that it does.

[@jonnybueno619]

Gummed up my entire oil pump intake enough to inhibit oil pump from working ,as in zero oil pressure. Spent 5 hours pulling pan to clean oil pump etc . This product would have ruined my engine if I let it ...do not use blue devil...

[@pauldinatale4338]

was your oil new or dirty? was your motor high mileage?

[@Fr33dom89]

Probably because of gummed up crummy oil deposits to begin with lack of maintenance, but that's something I might have to try first is to mix oil with this stuff and Agitated it and see If the consistency of the oil changes to a thicker substance

[@FreeStuffPlease]

Thanks. Everyone says 15 bucks if it doesnt work so what. But these are the type of replies that make me not want to try it. This is the only one I found however so more research is needed.

[@richardholmes7199]

@@FreeStuffPlease I just used some 5 days ago for my 1977 Buick Park Avenue. The leak completely stopped.

[@nitrojunki4249]

Blue Devil did not help me, I am going to try AT202

[@brianbrazelton2543]

People be talking about this product like it's a miracle you still gotta get the leek sealed up so really you just wasting more money

[@deuceswild9415]

I'm not sure I want to ride with this guy if he goes 100 miles in 30 minutes or so. lol

[@3030hp]

you will definitely get there fast.

[@davemckee4907]

Tried The blue devil sealer ,did not work on my car at all.drove it over 1,000 miles,still same rear main leak.Don't buy it,waste of money!!!

[@dougg1075]

BWAHAHAHA! oh this SHIT WORKS!

[@Mr.Caring]

Say what🤔 Were made in HIS image. HE made us with the power of free choice A good prayer: I'm a sinner JESUS please forgive me for all my sins I know you shed your Blood for me on the cross at Calvary. Thank you JESUS for my salvation and for shedding they Blood for me. I love you JESUS. Romans 10:5/10 ct...❤️k JESUSisLord!Amen... Amen.. If you'd like to call someone who cares 83 For Truth. bc you don't know when you'll die? .y r u hesitant. .. ......

[@NoWr2Run]

So did JESUS FIX YOUR OIL LEAK, Power Press Clips ?

[@HugoGaleana-n2b]

I put 6 quarts A week God PLEASE HELP ME he's bleeding out! Please don't take my baby from me god WHYYYYYY!!!

[@fredfungalspore]

The blue devil....never leaks only the engine oil read the instructions ...😄