It helps to keep the engine from overheating and protect cooling system parts from rust and corrosion. In cold regions, they also prevent the coolant from freezing.

Corrosion Prevention

Within a cooling system, there is a range of metallic components. To be effective, a coolant must possess anti-corrosion qualities to protect each type of metal. Genuine Toyota Long Life Coolant has been evaluated using a range of metals, including aluminium alloy, cast iron, steel, brass, solder and bronze. It has demonstrated optimal corrosion protection and does not damage non-metallic parts (rubber, resin etc). Non-genuine long life coolants were not created specifically for Toyota vehicles and may, therefore, cause corrosion.

Protection from Overheating

A reduction in the boiling point of a long life coolant can increase evaporation leading to a decrease in coolant volume and eventually, overheat. Genuine Toyota Long Life Coolant is based on ethylene glycol and surpasses Toyota s strict quality standards. In addition, mineral deposits are less likely to form in Genuine Toyota Long Life Coolant.

Protection from Freezing

When the air temperature drops below the freezing point, any and all coolants may freeze. As a result, expansion can cause cracks in the engine cylinder block. Genuine Toyota Long Life Coolant maintains an optimal freezing point, which passes Toyota s strict standards and prevents freezing.