Liqui Moly Radiator Stop Leak – 150ml

Liqui Moly Radiator Stop Leak is your quick and reliable solution for sealing minor leaks and hairline cracks in your vehicle’s radiator and cooling system. Whether you’re noticing a slow coolant loss, minor puddles under your car, or that pesky low coolant light keeps coming on, this product is designed to help – fast.

Engineered with German precision, this additive is suitable for all water-cooled engines and mixes seamlessly with all standard coolant types, including those containing aluminum components. Once added to the cooling system, it begins working immediately by forming micro-fine sealants that target and plug leaks without blocking the system or causing clogs. Unlike other quick fixes, Liqui Moly Radiator Stop Leak ensures a safe and lasting seal, all while protecting against corrosion and deposits.

You don’t need to be a mechanic to use it. Simply shake the bottle well, pour it into the radiator or expansion tank while the engine is warm and running, and let it circulate. In most cases, you’ll see results within minutes. It’s ideal for both emergency use and preventative maintenance, especially before long trips or when servicing older vehicles.

Whether you’re dealing with a weeping radiator, leaking cylinder head gasket, or small leaks in hoses and connectors, this product saves you from costly repairs and unexpected breakdowns. It also helps improve your engine’s longevity by maintaining proper cooling system pressure and preventing overheating.

Trusted by car enthusiasts and professionals alike, Liqui Moly has been a household name in automotive care for decades. Their Radiator Stop Leak solution reflects their commitment to quality, performance, and simplicity.

Keep a bottle in your garage or trunk—because peace of mind on the road is priceless.