The coolant system in a truck is very similar to the coolant system in a car. The radiator stores and cools down the coolant after it has been circulated through the engine. Checking the coolant level in your truck on a regular basis will help ensure that the truck's engine does not overheat. If you find yourself constantly pouring coolant into the radiator, it may be time to have the coolant system pressure-tested and checked for leaks.
Open the hood of the truck for access to the engine compartment. Locate the radiator in the front of the engine compartment, just behind the truck's front grille.
Twist the pressure cap on the radiator counterclockwise to remove it from the radiator. Place the cap to the side.
Pour in a gallon of antifreeze into the radiator. Fill the gallon container with water and pour the water into the radiator.
Inspect the level of the radiator by looking into the neck of the radiator. The coolant will come up to the radiator's neck when the radiator is full.
Repeat filling with antifreeze and water until the level is visible. This will ensure the coolant is properly mixed.
Start the truck and allow it to idle, with the pressure cap removed from the radiator. As the truck warms up, the level in the radiator will drop.
Pour in additional antifreeze and water, until the coolant is visible at the neck of the radiator. Tighten the cap onto the radiator once the radiator is full.
Inspect the radiator, radiator hose and front of the engine to ensure there are no leaks in the coolant system.
