Rislone 4447 Compression Repair Fix with Ring Seal - 16.5 oz.

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!!!!

It actually works so I'm well pleased

Seems to be working so good so far. I could feel a definite improvement with the compression and any smoke from the exhaust under load a acceleration also has stopped. How long it will last only time will tell.

Used this for the last 3yrs to help my 22yr old Mercedes engine, improved compression and quieter running. Was on offer for £10 this time so was a no brainier.

Was advised to use this by a mechanic for a worn piston ring. The car had beforehand occasionally smelled like burning oil. It took a few days to work - But no more burning oil smell. Chances are it'll pay for itself as I won't be refilling the oil so often.

It sure helps but I was expecting more.

Seems to work well, can't hear the piston slap no where near what it use to be so it's a thumbs up from me

I viewed this on YouTube and my results so far have been very good .

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i ordered the product first time it was delivered, and it was great. but when i place an order for second time i didn't receive it, but thanks to the Amazon customer care that step into the issue and the seller refunded me back my money, despite all that i recommend the seller and the product and hopefully i will reorder the product again if need be

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

Good product

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.