- Helps stop minor oil leaks
- Fortifies oil with viscosity enhancer
- Lubricates moving engine parts
STP ENGINE STOP LEAK Rejuvenates seals and gaskets GST63300EN -428 ml
STP Engine stop leak-rejuvenates seals and gaskets and helps fortify oil with a viscosity enhancer. Rejuvenates seals and gaskets. Over time, normal engine operation can lead to oil leaks. These occur when heat causes oil seals and gaskets to shrink, dry out, and crack. STP Engine stop leak to the rescue. Usage frequency: use for minor oil leaks. Take note. : try the complete line of STP Oil additive products, including oil treatment and smoke treatment.