Oil Seal Engine Oil Burning & Leak Repair (OS-1)

Oil Seal Engine Oil Burning & Leak Repair


  23 Reviews

As a car ages, engine seals harden and shrink from the plasticizers being removed over time. This means leaks, and nobody has time for that. This professional strength synthetic stop leak revitalizes these worn seals and gaskets to restore them to like-new performance. This is our strongest formula ever to stop main seal, valve seals, timing cover seal, cam seals, crankshaft seal, oil pan, valve cover and all other oil leaks.


  1. Turn engine off.
  2. Shake well. Remove oil fill cap and pour Oil Seal™ Engine Oil Burning & Leak Repair into engine per dosage chart.
  3. Do not overfill.
  4. Reinstall cap.
  5. Drive/idle engine for at least 15 minutes to mix thoroughly with oil and activate product to start working.
  6. Top off engine oil (add oil as needed) and leave Bar’s Leaks Oil Seal Engine Oil Burning & Leak Repair in system for continued protection. Drive vehicle as normal. Most oil leak issues are corrected in 250 miles or 3 days of driving.

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This product is incredibly effective against oil leaks, but what about oil burning? We have that covered too. There could be two possible reasons as to why your vehicle is burning engine oil. It may have an oil leak or you it could be burning oil during the ignition cycle. One common problem is if the cylinder walls are allowing oil to leak up from the bottom of the engine, past the piston and into the combustion chamber. So when the fuel ignites the oil does as well, and then expels it out as exhaust. Before you know it, you’re dealing with an oil burning problem.

The good news is that with a single application of Bar’s Leaks Oil Seal, those problems will be history.

Your vehicle is a good candidate for this solution if it does not consume more than one quart of oil per day. We have designed this product to work in all gasoline and diesel engines including turbocharged, EcoBoost, hybrid and even racing engines. This covers 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUV’s. Our product can also be used in heavy-duty applications referencing the appropriate dosage level. This applies to a wide range of other motor applications too: tractors, boats, RV’s, motorcycles (including wet clutch), ATV’s, lawn equipment.

You have a life. Your life needs a car. Don’t let oil leaks or burning get in your way.

Customer Reviews

  23 Reviews
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 23 reviews
 by Andrew V.
Worked well

I was losing oil from the engine. I had heard about this product and thought to try it, and it worked well.

 by Dan L.
Use with every other oil change

Oil Seal OS-1 is the product I used. 

The engine is an old Chevy 350, 182,400 miles. It’s going to be leaking oil and it did. After 2 applications your oil seal sure did the trick. I think of it as part of this old truck’s maintenance schedule. I’ll be adding a bottle every other oil change. It works!

 by Frank B.
Fixed leaking valve seals

Oil Seal OS-1 fixed my valve seals on my 4.0L OHV Ranger for 3 months until I had the warner weather to repair properly with hard parts.

 by Amit C.
Very happy, saved me from expensive repair

I used Bar's Leak - Oil Seal Engine Oil Burning & Leak Repair (OS-1).

I have 2002 Toyota Corolla LE and it was leaking oil from engine too much. Due to that, I had to constantly add engine oil. Also, I was getting a burning smell. After using Bar's Leak - Oil Seal Engine Oil Burning & Leak Repair (OS-1), the leak has completely stopped. I don't get any burning smell and I don't have to add oil anymore. I was very happy as it saved me from expensive repair.

 by Brandon B.
Amazing product, great customer service

My wife's 2005 Camry was losing oil somewhere.  There are tons of other products on the market but my research returned me to Bar's Leaks.  The main cause of concern was for the VVT engine in the Camry and, from my research, the (OS-1) Oil Seal was designed with this in mind.  I'm not going to lie. At first, I was very skeptical but after the first couple of days I was very impressed!  I was even more impressed a couple weeks later when it was still keeping all of its oil and I noticed that the wet oil stains around valve cover was dry!  This product is amazing and the company offers great customer service along with a great warranty! Thank you!

 by Peter B.
Recommended by my mechanic

I used Bar’s Leaks OS-1 on the recommendation of my mechanic, who told me that my 2005 pickup truck had a gradual and slow loss of engine oil being caused by what he described as more of ‘slow seepage’ than a true leak. After one application of OS-1 (added a quart during a routine oil change), I no longer detected the smell of burning oil coming from the hood every time I drove. I now have the peace of mind of knowing that my oil pan life has been extended as I continue to avoid a costly repair and close in on 200k miles!

 by Mohammad G.
Helped my Camry big time

I used your Bar’s Leaks Oil Seal Engine Oil Burning and Leak Repair (OS-1).  

My car’s piston rings got loosened and performance improved and no burning of oil on my Camry. Wow good product. Recommend to family and friends to buy.

 by Jose V.
Bought me a lot more time

I have used in the past Oil Seal Engine Oil Burning & Leak Repair (OS-1) on a Toyota Previa 1999 with 256,000 miles which had a lot of leaks. Well, the product gave me a lot more time before a complete repair. Thanks.

 by Chris & Jana W.
Exceptional products & service

Older Automobiles sometimes need a boost in the seals. Well we have several older cars. And this product is a true specialty when it comes to helping the oil rejuvenate the polymers in the seals to ensure the full life of the seals are used before the physical repair must be made! 
Now the best part: The warranty is very real and prompt attention with documentation is certainly honored.  So each time we invest in the product if we ever need to ask for a replacement, the replacement comes from Bar’s! 
This has occurred only one time and we are more than pleased with the ever-improving line and Bar’s Leaks supplying our retailers making it simple and easy each time we need a solution. 
Exceptional Products and Service! 

 by Charles C.
A made in USA product that works

I used your Bar's Leaks Oil Seal product. 

My 2012 Mini Cooper Countryman was burning a lot of oil. After using Bar's Oil Seal I could see a big difference in the amount of oil I had to add between oil changes. It really works! 

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