Coolant is a mixture of distilled water and ethylene glycol. Also referred to as antifreeze, its primary function is to absorb the extreme heat generated by a running engine. Coolant is introduced to the engine block and its components through a reservoir affixed to the radiator. When the engine is running, the coolant continuously circulates through the engine and back through the radiator. The radiator is affixed to the front of the vehicle, just behind the grill, to maximize air intake. As air passes through the fins on the radiator, it cools the circulating coolant.
Different vehicles require different coolants. There are varieties for every type of vehicle, from diesel engines to American, Asian and European vehicles. Each one is specifically formulated to keep its designated engine type running in extreme temperatures. It’s important to know the differences so you get the correct antifreeze for your vehicle.
The most common variety of liquid antifreeze is an IAT formula, or Inorganic Additive Technology.
Another common antifreeze formula is Dex-Cool, a coolant formula approved for use in GM vehicles.
OLD but GOLD
Since coolant technology has evolved so much in the last few decades, if you own an older vehicle you need a formula with a special additive to allow old and new chemistry to work together.
The benefits of adding a quality engine coolant to your vehicle far outweigh its costs.
- Prevents coolant system from freezing during the extreme temperatures of winter
- Raises boiling temperature of coolant.
- Helps to reduce engine rust and corrosion in the coolant system
- Extends the life of rubber and plastic components of the coolant system
- Helps to reduce electrolysis, which can erode engine components and cause costly repairs