Rated 5 out of 5 by Rosa this product is the best that i used
Is an excellent product
August 8, 2016
Rated 1 out of 5 by HBHarleyman Didn't work for me
I thought I'd give it a try on a car I just purchased, and the mechanic said I have a rear main leak. I actually tried it twice with two different oil changes, after it didn't work the first time. It didn't appear to slow down my rear main leak at all on my RX300 Lexus. Off to the mechanic to get the rear main seal replaced, and put his kids through college!
March 30, 2016
Rated 1 out of 5 by Strokeofirish Still leaking
Used this several times in my 96 jeep grand and didn't work,seal may be beyond any quick fix.
November 9, 2015
Rated 4 out of 5 by Seal Good Product
Reduced the leak substantially but not completely. Seals were damaged due to clogged PCV system which was replaced and cleaned. Will use another bottle of Bar's RMS during next oil change to hopefully recondition and seal the system.
September 22, 2015
Rated 5 out of 5 by Ramil This product works!
I was really surprised that this product works. Although, the instructions say that the leak should stop after 3 days of driving; my leak stopped after a week of driving. I'm still very happy that it works.
September 14, 2015
Rated 5 out of 5 by ClubJoe Really Works
I have been using this for a few years now on all my classic and antique vehicles. Not only for the motor but also in my transmissions and differentials. As long as the oil isn't shared with a wet clutch it will be fine. The seals rejuvenate and takes care of leaks.
August 20, 2015
Rated 4 out of 5 by Dafonz 80% effective
Expected the product to STOP the oil leak 100%.
I'll settle for the 80% effective as it is better than pulling the transmission.
August 8, 2015
Rated 5 out of 5 by gregt works
had a slight leak from the main seal, mechanic said to put in an additive and it might fix it. Put it in and the leak is gone.
July 27, 2015
Rated 4 out of 5 by Falcon This product gave me what I was looking for.
This product gave me what I was looking for. Controlling the loss of engine oil and preventing the repair and costs.
May 22, 2015
Rated 1 out of 5 by StreetShark1 Don't bother spending the money for this
I bought and used this product twice for my
94 Toyota Camry. I just sent it to the junkyard for a payment of $200.00. The blocked cracked from the the oil leaking out and the subsequent overheating. This resulted in oil and coolant mixing in a cylinder. I've lost the car, my money, and the way I make a living for the time being until I figure a way to get another vehicle in which to transport me and my tools. I'm a handyman who is currently financially embarrased.
May 9, 2015
Rated 3 out of 5 by Bobd725 Only small, non mechanical leaks
This and many other products like it or not designed for major leaks you and if they say main bearing leaks they just don't work well for small leaks around seals valve covers etc this works very good
January 19, 2015