Extreme Cooling System 325ml (Degreaser)

Product code: WYN25541N

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£12.99

£10.83 ex. VAT

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Wynns Extreme Cooling System Degreaser — 325ml

Part Number: WYN25541N

Wynns Extreme Cooling System Degreaser is a concentrated cleaner formulated to remove oil, grease, and sludge contamination from automotive cooling systems. This 325ml solution uses advanced detergents and surfactants to dissolve and disperse oil-based contaminants that enter through internal leaks, head gasket failures, or cooler damage. By restoring proper heat transfer, it helps prevent overheating, protects components, and ensures cooling system reliability after contamination.

Product Characteristics

• Dissolves and disperses oil, grease, and sludge contamination
• Emulsifies oil particles for complete removal during draining
• Cleans throughout the radiator, heater core, and coolant passages
• Restores efficient heat transfer to prevent overheating
• Breaks down sludge that restricts coolant circulation
• Compatible with all types of antifreeze and coolants
• Safe for aluminium, copper, and plastic cooling system parts
• Professional-grade formula for workshop or DIY use
• Ideal for cleaning before repairs or gasket replacement
• Helps extend cooling system component lifespan

Storage & Shelf Life: Store sealed in a cool, dry, and well-ventilated place. Avoid freezing, heat, and direct sunlight. Shelf life: 5 years from manufacture.

How to Use

• Ensure the engine is cool before beginning.
• Add the entire 325ml bottle to the cooling system.
• Top up with water if necessary to maintain the correct level.
• Run the engine at normal operating temperature with the heater set to maximum for 10–15 minutes.
• Allow the engine to cool completely, then drain the cooling system according to manufacturer instructions.
• Flush thoroughly with clean water until it runs clear.
• Refill with fresh coolant of the correct type and concentration.
• For severe contamination, repeat the treatment if required.
• Recommended as a first step when oil contamination is present due to head gasket failure or cooler leaks. Follow with Wynns Cooling System Flush 325ml to remove remaining mineral scale and deposits.