Engine Oil Stop Leak 12 Ounce

PERMATEX Engine Oil Stop Leak is a 12-ounce motor oil additive designed to seal small leaks and seeps in various engine components such as crankshaft seals, valve covers, oil pans, and gaskets. This product is particularly beneficial for high-mileage vehicles, including those used in civilian fleet maintenance, law enforcement, and military support equipment.

The formula works by conditioning rubber seals and gaskets, restoring their elasticity and reducing permeability to effectively shrink micro-gaps where oil escapes. It contains proprietary seal-conditioning agents that soften hardened elastomers without thinning the oil or affecting engine performance, viscosity, or sump capacity. This additive is compatible with conventional, synthetic, and semi-synthetic motor oils, mixing seamlessly into the crankcase.

Mechanics, fleet supervisors, and vehicle owners managing aging equipment will find Engine Oil Stop Leak to be an economical first-line solution for addressing minor oil leaks before they escalate into more significant issues requiring costly repairs. By prolonging seal life and maintaining oil pressure integrity, this product provides a non-invasive intervention that is ideal for early-stage oil weeping.