Bar's Leaks Rear Main Seal Repair Additive, 16.9 oz

I purchased three bottles of this for my Cummins ISX 15 engine and I believe the product would have actually worked if I had added the proper amount and my seal hadn’t been too far gone. I could tell a slow down in the amount of oil I was losing. I think the product is worth a shot at a first detect of oil leak. I will use in the future.

as with all snake oil car products as I call them, I am always skeptical. but for my son-in-law's old beater car that was leaking about a quart of oil a month out the front main seal and probably other areas, this actually sealed it up! change the oil and added this to replace part of it. do not overfill your oil! it's been about 2 months now and he hasn't had to add any oil since the oil change. worked quickly no oil spots on my driveway either.

Have a 1998 s10 that the rear main seal was leaking and getting worse. I was skeptical about a miracle in a bottle but after about 200 miles no more leak. Pleasantly surprised

Seems to gunk up the leaks good with every Bars product. I stick with them and Lucas. Careful in winter, because the oil pressure climbs with thicker additives !

[This review was collected as part of a promotion.] Love this stuff. I have used it a few times on a few different trucks, and it works every time. I have an 2004 chevy suburban with 200k miles. It started leaking at the rear seal. Installed the stop leak with fresh oil change and with ina few hours it stopped leaking. I would recommend this stop leak to anyone.

[This review was collected as part of a promotion.] I have used this product several times as I have always owned high mileage used vehicles and am a fix it myself guy. It works great and definitely can add time to your seals and is the better option than the time and effort of pulling engines and transmissions to replace seals. Seals leak in a high percentage of old vehicles and if you use this at early signs of leaking you will add life to the ol jalopy.

[This review was collected as part of a promotion.] Used this product in my high mileage Chevy Silverado. Has rejuvenated the seals throughout the engine leading to much less oil consumption and better response. The polymer blend is great.Running smooth at 364,000!

[This review was collected as part of a promotion.] I have used this in the past for a leaking front crankshaft seal on a Jeep Liberty and it worked great. The leak never came back. I did recommend this product to quite a few friends and they all had similar experience with great results.

My girlfriends 2013 F150 has had an oil leak at the rear main seal for a while. I read some reviews for Bars Leak Rear Main Seal Repair and decided to give it a try. After a couple hundred miles the leak has stopped! I couldn't believe it. I figured at best it might slow the leak some. This stuff is amazing!

[This review was collected as part of a promotion.] I recently noticed that my vehical was loosing oil. I checked under the chassis and found that the rear main seal is slightly leaking oil. I purchased the BARS rear main seal and it stopped the leak. I know it's a temporary fix until I can get it repaired but at least I can have some peace of mind knowing that the vehical isn't leaking and have some time to get it repaired