Products - Main Sta – 16 oz.

I thought it was just gonna be snake oil like all the rest. But I checked the reviews, crossed my fingers and poured it into the rankcase of my '93 3.2l Mercedes 300TE l. I have a main seal leak that would drip onto the exhaust - ew! stinky oil smoke! - several times a day. Now it drips once a day, if that.

I have tried everything I could find to stop a rear main seal leaking a quart a day first treatment cut my leak more than 1/2 and the second treatment has slowed down my oil usage drastically. Could not ask for more. I have also used their oil leak stop leak and it was great also on another car a year ago. You would not believe how great it is!

Used it on my 4.0l Jeep engine that has a small rear main seal leak, mainly drops after I park and leaves a small oil stain about 3 inches in diameter. Tried this with no change. So it may work for you or it may not depending on the situation, but for mine, did not work.

Actually made the rear seal leak worse

Good product

I’m going to be honest didn’t expect this to work as well as it is! Put the whole bottle in last night and have put maybe 30 miles on and has already cut more than half the oil leak. For a temporary solution definitely would recommend!

Works great stopped the leak

I had a small oil leak in the rear seal of a vintage small block Chevy . After changing the oil I added this product and drove about 100 miles I placed some cardboard under the car to check for the leak which showed no leaks Product works as advertised