Coolant

Coolant, also known as antifreeze, is a liquid that helps regulate the temperature in the engine by preventing overheating and freezing. It is important for ensuring optimal performance and protecting engine components from damage caused by extreme temperatures.

It is recommended to check the coolant regularly and change it according to the car manufacturer’s recommendations, which are typically found in the car's manual. Generally, the coolant should be changed every 2-5 years, depending on the product and driving conditions.

There are several reputable brands of coolant, such as Bardahl, Polar, and Holts. It is generally not recommended to mix different brands or types of coolant, as this can affect effectiveness and protection, so it is best to use the same type that is already in the system.