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
Add entire bottle of Rear Main Seal Repair to engine crankcase (where you add oil) at or between oil changes. Do not overfill. Most leaks will stop within 100 miles or 2 days of driving
