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⚡️ Bring your engine back to life — don’t let worn rings hold you back!
Rislone 4447 Compression Repair Fix with Ring Seal is a 16.5 oz. engine additive designed to restore lost compression by freeing sticky piston rings and improving oil viscosity. Compatible with gasoline and diesel engines across cars, trucks, motorcycles, and ATVs, it reduces burning oil smell and helps extend engine life, making it a trusted solution for professional-grade engine maintenance.
| ASIN | B00CGRX6RE |
| Best Sellers Rank | 4,787 in Automotive ( See Top 100 in Automotive ) 67 in Fillers, Adhesives & Sealants |
| Brand | Bar's Leaks |
| Brand Name | Bar's Leaks |
| Compatible with Vehicle Type | Car, Truck, Motorcycle, ATV, etc. |
| Container Type | Bottle |
| Customer Reviews | 4.3 out of 5 stars 1,797 Reviews |
| Global Trade Identification Number | 00078615044474 |
| Item Weight | 0.35 Pounds |
| Liquid Volume | 16.5 Fluid Ounces |
| Liquid volume | 16.5 Fluid Ounces |
| Manufacturer | Rislone |
| Manufacturer Part Number | 4447 |
| Package information | Bottle |
| UPC | 078615044474 078615444472 |
| Vehicle service type | Car, Truck, Motorcycle, ATV, etc. |
| Viscosity | 5W-30 sae_grade |
K**S
Incredible stuff!!!
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!!!!
M**R
It works!
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.
I**E
Seems to doing the job.
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.
M**S
Does what it says on the tin
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.
S**D
Oil additive
The product looks good, time is needed to know if it works
A**R
headline
it seems to have done the job no smoke from the exhaust looks good
J**S
Help your engine
I viewed this on YouTube and my results so far have been very good .
P**.
Do not buy... did not work even in a little 1.2 peugeot
WASTE OF MONEY !!! Car failed on emissions and blowing small amount of smoke from burning a little oil bought this, put it in and took it back to MOT and they've said its a lot worse now so it really doesn't work. The consistency is that of gearbox oil maybe a little thicker but I used gearbox oil in the past with better results than this.
Trustpilot
2 weeks ago
2 weeks ago