STP Engine Stop Leak 300 ml for Petrol and Diesel Engines

STP Engine Stop Leak for petrol and diesel engines

Helps condition engine seals and reduce minor oil leaks, while staying compatible with regular and synthetic motor oils.

This 300 ml STP Engine Stop Leak is designed for petrol and diesel engines where you are dealing with minor oil leaks. It is made to help condition engine seals, with a formula that works alongside regular and synthetic motor oils.

The product is intended to support the engine without clogging filters or restricting oil flow. It is also listed as safe for oxygen sensors and catalytic converters, which is useful if you are looking for a leak treatment that fits into normal servicing without adding extra complications.

Why it may suit your car

• Helps reduce minor oil leaks rather than major mechanical faults
• Suitable for petrol and diesel engines
• Compatible with regular and synthetic motor oils
• Designed to condition seals
• Formulated not to clog filters or inhibit flow
• Listed as not harmful to oxygen sensors or catalytic converters

Before you buy

Check that your issue is a minor oil leak and follow the product label guidance carefully. If the leak is significant or the engine has a more serious fault, this kind of treatment is unlikely to be the right fix.

Contents: 300 ml.

Made in the UK.