Prestone® Engine Oil Stop Leak is a premium full-synthetic formula that can delay or even eliminate the need for costly repairs. Its additive technology helps to stop leaks by revitalizing dried, shrunken and hardened seals and stops leaks by resporing seals. This synthetic stop-leak formula is compatible with ALL synthetic engine oils and ALL conventional and high-mileage engine oils.
- Stops Leaks Quickly - Restores Hardened & Shrunken Seals
- Protects in the engine 2X longer than conventional oil-based stop leak products
- Works with All Motor Oil Types - Synthetic/Conventional/High Mileage
