Add entire bottle of Rear Main Seal Repair to engine crankcase (where you add oil) at or between oil changes. Do not overfill. Seals timing cover, cam seal, rear main and other hard to stop oil leaks.
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Bar's Leaks Concentrated Rear Main Seal Repair, Engine Oil Stop Leak, - 16.9 oz
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Bar's Leaks 1040 Concentrated Rear Main Seal Repair - 16.9 oz
