High Mileage 4 6 8 Compression Repair

I have a 1989 boat. The engine is the Mercruiser 4-cylinder Alpha One. The engines were actually made by General Motors. They were used in Chevys, and they adapted them for marine use by putting their own intake manifolds and exhaust manifolds on them. I would note that marine engines have a hard life. They are frequently run wide open at 4,000 RPMs for long periods of time, causing more wear than the same engine in a car would experience. So, my engine was 34 years old and very tired. Starting was unreliable. It would crank and crank until it would catch, and then I had to keep the rpms at about 3,000 for a while or it would die. You could tell one cylinder was not firing- maybe two because of the lumpy running and engine shaking. Idling was out of the question for at least 5 minutes. If other people were at the boat ramp I felt embarrassed because of all the blue smoke my boat made. I decided to add one container of this product to my oil to see what would happen. The first four times I started the engine, there was no change. About the fifth time, I noticed it was running more smoothly. Then, after about a month, I accidentally started the engine without giving it any throttle- I just turned the key. It started right away (miracle #1) AND idled smoothly at 700RPM (miracle #2). I could not believe it! I turned it off and started it again, and the same thing happened. Since then, it has done this every time. No blue smoke, no engine shaking, engine starts immediately and idles smoothly. That's my story. I don't know what they put into this product, but whatever it is it actually works. It restored my balky, high-mileage engine so it now starts and purrs like a baby. I would highly recommend this product, and that's an understatement.

Give this a try before replacing piston rings. I have an old and tired Tecumseh flathead that ran okay for its age but smoked a lot and blew oil out the breather tube. I used the Rislone as directed and it made a huge improvement. Don’t expect immediate results, as piston rings can take some time to come back around. Engine still smokes a bit under load, but consumes oil far less and runs well. I’ll have to do a rebuild eventually, but I rely on my machines and can’t afford that much down time. Highly recommend!

It worked somewhat; I will definitely be using a 2nd bottle to see if it clears up more. Probably need 2 bottles for a 8 cylinder

Wow is all I can say. Added to a 1991 John Jeere 2155 I was afraid was needing rebuild soon. It stopped blow by. Exhaust is clean now. Runs better. Slow leak around oil pan stopped.

Bought a can for my okd Subaru Forester when it developed compression issues. Although it didn't cure the issue, it did help noticeably. I couldn't have aAdked any more of it for the price.

This item will revive your high mileage engine, it works as described

Put some in a few old equipment engines, they no longer smoke and seem to run better.

It works

Lo compré por si algún día hiciera falta ya que estos productos son difíciles de conseguir en España

It’s amaizing. Just let the engine run for 5 minutes and the knock sound was gone

Purchased this in desperation as my motorbike had lost compression in one of its cylinders so it was this stuff or bike sold as spares and repairs . Used 3/4 of the bottle and the bike is running like new..... can't fault it!!!!

good product

It works so well on my 150k km wrx.