Combat engine oil leaks with STP Engine Stop Leak (300ml), a high-performance formula designed to recondition seals and gaskets while reducing minor oil leaks. This advanced polymer treatment helps restore seal elasticity in valve covers, oil pans, rear mains, and more – extending engine life and preventing costly repairs in high-mileage vehicles.

Key Benefits:

✔ Seals Minor Leaks – Replenishes dried/seeping gaskets
✔ Reduces Oil Consumption – Minimizes burn-off through worn guides
✔ 300ml Concentrate – Treats engines up to 5L capacity
✔ Preventive Protection – Conditions seals before major leaks develop
✔ Universal Compatibility – Works with gasoline & diesel engines

How It Works:

1. Swelling Agents – Gently expand hardened seals

2. Plasticizers – Restore flexibility to rubber/neoprene

3. Sealant Polymers – Temporarily fill micro-gaps

How to Use:

1. Add to Oil – Pour entire 300ml into oil filler neck

2. Drive 50-150km – Allows treatment to circulate

3. Check Leaks – Reapply if needed (max 2 treatments)

Pro Tips:

 Best For:

• Valve cover gasket seeps

• Minor rear main seal weeping

• Oil pan drips
   Not For:

• Major leaks (>1 drop/minute)

• Blown head gaskets

• Turbocharger oil seals
   Storage – Keep bottle tightly sealed

Works With:
✅ Synthetic & Conventional Oils
✅ Engines 100,000+ km
✅ Most Gasoline & Diesel Engines