Bars Leaks 1040 Seal Repair,Concentrated,16.9 oz.

Concentrated Rear Main Seal Repair helps restore rear main seals and stop leaks in worn seals and crankshafts in gasoline and diesel engines that use conventional, high-mileage, and synthetic oil. Seal Repair, Concentrated, 16.9 Oz.

• Seals timing cover, cam seal, rear main and other hard to stop oil leaks
• Add to engine oil
• Specifically designed to seal rear main leaks, but also works better than a conventional stop leak on all other leaks