STP Radiator Sealer – 300 ml

? Description:

STP Radiator Sealer (300 ml) is a fast-acting solution designed to seal minor leaks in radiators, hoses, and the entire cooling system. It forms a durable barrier inside the cooling system to stop leaks and also helps protect against corrosion and rust, prolonging the life of the radiator and water pump.

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? Specifications & Usage:

Size: 300 ml

Treatment Capacity: Effective for up to 14 liters of coolant

Compatible With:

All types of radiators (aluminum, plastic, metal)

Antifreeze & coolant mixtures

Rubber hoses and gaskets

How to Use:

1. Shake the bottle well before use.

2. Add the entire contents into the radiator or expansion tank while the engine is warm (not hot).

3. Start the engine and let it idle with the heater on for 10 minutes.

4. Drive normally afterward. Do not overfill.

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⚙️ Key Benefits:

Seals minor leaks in the radiator and hoses quickly

Reduces coolant loss and prevents overheating

Protects against rust and corrosion

Safe for metal and plastic cooling system components

Easy to use without any tools or mechanical experience

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⚠️ Important Notes:

Temporary fix only: Not intended for repairing large cracks or broken components

Avoid overuse: Excess product may clog heater cores or small coolant passages

Flush recommended before use: For best results, use after a radiator flush to remove debris and buildup

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✅ Ideal For:

Drivers noticing minor coolant leaks

Emergency roadside repairs

Preventing costly damage before reaching a repair shop

Older vehicles or vehicles with minor wear in the cooling system