Engine Stop Leak 325ml

Product code: WYN50664

30 in stock

GBP new

£10.49

£8.74 ex. VAT

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Wynns Engine Stop Leak is a specialized oil additive designed to seal and stop external oil leaks in gasoline and diesel engines. This effective 325ml formula contains advanced polymer agents that swell and recondition hardened, shrunken, or deteriorated engine seals and gaskets, helping to reduce or eliminate common oil leaks without requiring mechanical repair. The non-clogging formula is compatible with all mineral, semi-synthetic, and fully synthetic engine oils, providing a cost-effective solution for addressing minor to moderate oil seepage and leaks.

Key Features

• Seal Conditioning: Revitalizes and expands dried or shrunk rubber seals and gaskets
• Leak Reduction: Effectively stops or reduces external oil leaks
• Compatible with All Oils: Works with conventional, semi-synthetic, and full synthetic oils
• Non-Clogging Formula: Won't harm oil passages or filter systems
• Preventative Maintenance: Helps maintain seal elasticity in aging engines
• Oil Consumption Reduction: Decreases oil loss through external leaks
• Environment Protection: Prevents oil spots on driveways and parking areas
• Cost-Effective Solution: Fraction of the cost of mechanical seal replacement
• Easy Application: Simply adds to engine oil
• Long-Lasting Effect: Continues working throughout the oil change interval

How to Use

Add entire contents to the engine oil when the engine is at normal operating temperature. One 325ml bottle treats 4-6 liters of engine oil. Drive normally, allowing the product to circulate through the oil system. Results may begin to show within 200-300 miles of driving, with maximum effectiveness typically achieved within 500-800 miles. For preventative maintenance in high-mileage engines, use with every other oil change. For active leaks, a second treatment may be used at the next oil change if needed.

Engine Stop Leak is particularly valuable for addressing common oil leaks from valve cover gaskets, oil pan gaskets, timing cover seals, and rear main seals without requiring expensive mechanical repairs. This product is ideal for older, high-mileage vehicles where seal shrinkage is common. Not recommended for repair of damaged or cracked components or severe leaks requiring mechanical attention. For comprehensive engine protection, consider combining with Wynns Engine Treatment for improved performance and protection.

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