How to Summer-ize Your Truck
New coolant won’t do you any good if you have a pressure leak in your cooling system. When changing the coolant/antifreeze be sure to pressure check both the radiator system and the cap. Repair or replace anything that is needed to get your system to hold pressure again. Remember a 15 psi cooling system will run 50 percent hotter before boiling over when compared to an open system. View Related Article