Rislone High Mileage Compression Repair with Ring Seal is a concentrated proprietary blend of petroleum additives designed to address decreased or uneven compression in high mileage engines. It works by freeing sticky piston rings and filling gaps and scratches in cylinder walls. This process helps eliminate blow-by, a condition where combustion gasses leak past the rings and into the crankcase, reducing compression and engine performance. Rislone Compression Repair with Ring Seal also reduces friction and wear between the pistons and cylinder walls. Restores Lost Compression and Power Rislone Compression Repair with Ring Seal addresses decreased compression in high mileage engines, renewing worn engines and rebuilding compression to restore lost power. Stops Blow-By By freeing sticky piston rings and filling gaps in cylinder walls, this product helps eliminate blow-by, a condition where combustion gasses leak past the rings and reduce engine performance. Reduces Friction and Wear The formula reduces friction and wear between pistons and cylinder walls, promoting engine longevity. Safe for Most Engines Contains no harmful lead or other metals, and is compatible with gasoline and diesel engines, conventional, high mileage, and synthetic oil formulas, as well as turbocharged engines. Easy to Use One bottle treats 4 to 6 quarts of oil (adjust based on engine size), and is safe for use in 4-Stroke ATV, Motorcycles, and small engines with wet clutch applications. Improves Engine Performance and Efficiency By addressing signs of decreased compression like power loss, poor fuel mileage, oil consumption, and engine noise, Rislone Compression Repair with Ring Seal can help improve overall engine function and efficiency.