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Oil Stop Leak

Engine

Rejuvenates aged seals and gaskets by adding flexibility and swelling, helping to restore their sealing capability and reduce weeping leaks.

Oil stop leak is a conditioning agent added to the crankcase that softens and slightly expands dried-out seals and gaskets, helping them reseal and stop minor weeping leaks. It works best on slow leaks from valve cover gaskets, oil pan gaskets, and rear main seals caused by age and shrinkage rather than damage. It is not a permanent fix for serious leaks but can extend the service life of aging seals.

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Typical part cost
$10–$30🔒
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DIY difficulty
1/10

⚠️ Owners Often Notice

If the Oil Stop Leak is starting to fail, these are the signs owners most commonly report before it gets worse:

Minor oil weeping from seals
Oil spots under parked vehicle
Visible slow oil loss

Related Services

Services commonly performed on or around this part.

Add Oil Stop Leak

No standard interval on file