STP Engine Stop Leak

Engine Stop Leak

Weight: 14.5 fl oz (428 ml)


Pour entire bottle into crankcase, Run engine for 15 minutes. Drain at normal oil change interval. If leaks persist beyond 1,000 miles, mechanical repairs may be required. Consult a trained mechanic.

Product Details

Over time normal engine operation and heat can cause polymer oil seals and gaskets to shrink, dry-out, become brittle and crack resulting in a minor oil leak. STP Engine Stop Leak is formulated to help stop minor oil leaks with a special agent to rejuvenate shrunken, dried out polymeric seals and gaskets. Plus, STP Engine Stop Leak helps fortify your oil with extra protection additives and a viscosity index improver. Compatible with regular and synthetic motor oils. Contains no solids to clog filters or inhibit flow. Will not harm oxygen sensors or catalytic converters.



Contains olefin copolymer and zinc dialkyldithiophosphate. Avoid eye contact and prolonged skin contact. For eye contact, immediately flush eyes with water for 15 minutes. Call physician immediately. For skin contact, wash thoroughly with water. Keep out of reach of children.


First Brands Corporation
Danbury, CT 06813-1999 888-464-7871

Copyright 1998 First Bands Corporation