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โก๏ธ Unlock hidden engine power and silence the knockโbecause your ride deserves the best!
Bar's Leaks Rislone 4447 Compression Repair with Ring Seal is a premium additive designed to restore lost compression in high-mileage gasoline and diesel engines. Its proprietary polymer blend fills cylinder wall imperfections and frees sticky piston rings, reducing blow-by, engine noise, and wear. This 16.9 oz formula improves viscosity for smoother operation, helps vehicles pass emissions tests, and is free from harmful metals, making it a safe, effective solution for extending engine life across a wide range of vehicles.










| ASIN | B00CGRX6RE |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #22,668 in Automotive ( See Top 100 in Automotive ) #97 in Automotive Fillers, Adhesives & Sealants |
| Brand | Bar's Leaks |
| Brand Name | Bar's Leaks |
| Compatible with Vehicle Type | Car, Truck, Motorcycle, ATV, Bus, Boat, Snowmobile, Lawn Mower, Generator, Tractor, RV, Heavy Equipment |
| Container Type | Bottle |
| Customer Reviews | 4.3 out of 5 stars 1,894 Reviews |
| Global Trade Identification Number | 00078615044474 |
| Item Weight | 0.35 Pounds |
| Liquid Volume | 16.5 Fluid Ounces |
| Liquid volume | 16.5 Fluid Ounces |
| Manufacturer | Bar's Products |
| Manufacturer Part Number | 4447 |
| Model Number | 4447 |
| Package information | Bottle |
| Size | Pack of 1 |
| UPC | 078615044474 078615444472 |
| Unit Count | 487.9632 Milliliters |
| Vehicle service type | Car, Truck, Motorcycle, ATV, Bus, Boat, Snowmobile, Lawn Mower, Generator, Tractor, RV, Heavy Equipment Vehicle service type Car, Truck, Motorcycle, ATV, Bus, Boat, Snowmobile, Lawn Mower, Generator, Tractor, RV, Heavy Equipment See more |
| Viscosity Level | Medium to High |
L**E
Works like magic
Itโs amaizing. Just let the engine run for 5 minutes and the knock sound was gone
A**9
Worked well
Worked well, old engine is smoother now.
B**4
happy
as described..recommended
A**D
Engine Damaged after usage
there was no instruction on product how to use. but i used similar products before and there some minor or medium difference. car was running fine and only problem was little hesitation due to long time stopped, after changing to new oil and used this product the car started to smoked heavily, i said maybe it cleaning the engine, so i kept the car running at idle for around 40 minutes until engine suddenly started acting weirdly and completely damaged within seconds.
J**D
Good
Not magic but good
C**N
Funcionarรก
Hasta proximo cambio de aceite no oo usarรฉ, ya q eche sellador de junta de culata y no se pueden mezclar. Pero conociendo la marca seguro q va de maravilla.
T**Y
Partially good
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
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!!!!
A**A
Perfomance of car improved
Good product
J**T
Cela ne sert ร rien
Pas dโ effet
Trustpilot
2 weeks ago
1 week ago