MANNOL 9966 Radiator Leak-Stop / Radiator Sealant Additive 325ml.

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A special additive to coolant used as a sealant for the cooling system of internal combustion engines (ICE) and the interior heater. Suitable for any liquid-cooled internal combustion engine with radiators made of any material (aluminum, copper, plastic, composite, etc.). It is a blend of metal polymers and special fibers designed to eliminate leaks in the system.

Product features:
- Compatible with any coolant and water;
- Seals the cooling system and eliminates leaks at gaskets, clamps, small cracks in the radiator, cylinder head gaskets, the water pump, and the cylinder block itself. Prevents future leaks;
- Cures only at leak points without clogging the radiator pipes. Once cured, it is resistant to vibrations and temperature fluctuations, does not wash out, and does not dissolve.
- Recommended especially for sealing microcracks and microleaks whose location is difficult to determine but which cause a drop in the coolant level;
- Completely neutral to all construction materials (metals and alloys, plastic and rubber parts). Restores lost elasticity and durability of seals, protects them from drying out, hardening, deformation, and cracking, slows down their aging, and thus extends their service life.
- Has excellent anti-corrosive properties, neutralizes corrosive acids;
- Extends the life of the water pump;
- Can be used to prevent leaks as well as the aging process and wear of seals and sealing rings and generally to prevent failures of the cooling system.