Description
Wynn’s Engine Oil Stop Leak 325ml 50664 – Petrol, Diesel & Hybrid Engine Oil Additive
Wynn’s Engine Oil Stop Leak 325ml (50664) is a specialist engine oil additive designed to stop or reduce oil leaks caused by dried, shrunken or hardened rubber seals and O-rings.
The formula helps revitalise and restore the elasticity of rubber and neoprene seals, reducing oil drips without requiring engine dismantling. It also lubricates and protects seals to help keep them in good working condition.
Suitable for petrol, diesel and hybrid engines, Wynn’s Engine Stop Leak is compatible with mineral and synthetic engine oils and does not affect oil viscosity or normal engine performance.
Key Features & Benefits
- Helps stop and prevent engine oil leaks
- Revitalises dried, shrunken and hardened seals
- Restores elasticity of rubber and neoprene seals
- Suitable for seals and O-rings
- Helps lubricate and protect engine seals
- Works without dismantling the engine
- Does not affect engine oil viscosity
- Suitable for petrol and diesel engines
- Suitable for petrol and diesel hybrids
- Safe for catalytic converters
- Compatible with mineral and synthetic oils
- Suitable for single-grade and multi-grade oils
- 325ml bottle treats up to 6 litres of engine oil
Directions for Use
- Add the complete 325ml bottle directly to the engine oil.
- One bottle treats up to 6 litres of engine oil.
- Run the engine to allow the treatment to circulate.
- For best results, drive approximately 200 miles (300 km).
Product Details
Brand: Wynn’s
Product: Engine Oil Stop Leak
Part Number: 50664
Capacity: 325ml
Application: Engine Oil
Suitable For: Petrol, Diesel & Hybrid Engines
Treatment Capacity: Up to 6L of engine oil




