Restore engine performance and reduce oil leaks with Bar's Leaks OS-1 Oil Seal Engine Repair. This advanced one-bottle formula is designed to help stop engine oil burning and repair worn seals and gaskets in both gasoline and diesel engines—without the cost of an engine teardown. Simply pour it into your crankcase during an oil change or between oil changes.
Helps Stop Oil Burning: Reduces blue exhaust smoke and excessive oil consumption caused by worn valve seals, valve guides, and piston rings.
Renews Seals & Gaskets: Restores dried, hardened, and shrunken seals throughout the engine to help stop leaks and reduce oil loss.
Wide Engine Compatibility: Safe for use in 3, 4, 6, 8, and 10-cylinder gasoline and diesel engines, including turbocharged, hybrid, and high-performance applications.
Easy to Use: Just add the contents to the engine crankcase—no special tools or engine disassembly required.
Made in the USA: Manufactured by Bar's Leaks, a trusted leader in automotive repair solutions since 1947.
High-mileage cars, trucks, SUVs, and vans with oil leaks or oil spots under the vehicle.
Engines that consume excessive oil between oil changes.
Motorcycles, ATVs, boats, tractors, and other gasoline or diesel-powered equipment.
1 × Bar's Leaks OS-1 Oil Seal Engine Repair Bottle
Size: 16.9 fl oz (500 mL)