The Cooling System of the vehicle keeps the engine from overheating since the car engine best runs at a high temperature. There are two types of cooling systems: liquid-cooled and air-cooled. Most modern cars are liquid-cooled while older cars are typically air-cooled. No matter what type of vehicle you have, if the car engine is overheating this is problematic and cause to bring the vehicle into the shop for servicing of the Cooling System.