Cooler Leak Stop Additive – Immediate Protection Against Coolant Loss & Overheating

The Cooler Leak Stop Additive from AUTOGAR® is a highly effective solution designed to provide fast and reliable relief in cases of coolant loss, micro-leaks, and early signs of overheating. A leaking cooling system can quickly escalate into serious engine damage, leading to high repair costs and unexpected breakdowns. This advanced additive seals micro-cracks throughout the cooling circuit and restores the system’s ability to regulate engine temperature safely and efficiently. Whether you drive daily, manage an older vehicle, or want preventive protection, this formula offers immediate assistance without requiring a visit to the workshop.

Coolant leaks often remain unnoticed until the temperature gauge rises, or the driver notices a sweet smell, visible drips, or steam.
The Cooler Leak Stop Additive is designed to counteract these issues quickly by forming a durable seal at the precise location of the leak. Unlike conventional products that may clog the cooling system, this congestion-free formula reacts only where damage exists. It travels through the cooling system, identifies micro-cracks, and builds a targeted sealing film without interfering with coolant flow or heat exchange.

How Cooler Leak Stop Additive Works

The innovative sealing technology uses active particles that remain suspended in the coolant until they encounter areas of pressure loss. Once they reach a micro-crack or hairline split, they accumulate and solidify, creating a stable, heat-resistant seal. This prevents further coolant loss, stabilizes system pressure, and helps the engine maintain ideal operating temperature. Because the formula is compatible with all coolant types and materials—radiators, hoses, gaskets, water pumps—it provides universal protection for both modern and older engines.

Overheating can cause warped cylinder heads, blown gaskets, and severe internal engine wear. By preventing coolant levels from dropping, the Cooler Leak Stop Additive shields the engine from thermal stress and extends its lifespan. It is ideal for vehicles showing early symptoms of coolant loss, as well as for preventive use on aging or high-mileage cooling systems that may develop leaks over time.

Performance, Protection & Long-Term Benefits

Just one application can significantly improve cooling system stability. Drivers will notice more consistent temperature control, reduced coolant consumption, and improved reliability during long drives or heavy engine load. Additionally, the formula contains corrosion inhibitors that protect metal components inside the radiator and water pump, preventing rust formation and future weakening of the system.

The Cooler Leak Stop Additive is easy to use and requires no mechanical skills. Simply shake, add, and let the engine run—within minutes, the additive begins sealing leaks and restoring proper cooling performance. Suitable for gasoline and diesel engines alike, it is a must-have maintenance product for anyone who wants to avoid expensive repairs and maintain long-term engine health.