The radiator cap is more than a cap for your radiator; it keeps your engine cool by sealing and pressurizing the coolant inside it. It is designed to hold the coolant in the radiator under a ...

We may receive a commission on purchases made from links. Whenever I get my hands on a newly bought used car, my checklist includes inspecting a few underhood items as part of the "getting-to-know-the ...

Flushing and replacing coolant is a moderately difficult repair job. Consult the owner's manual, your car’s manufacturer, or a trusted mechanic for more specific information on your vehicle. You take ...

Tip: Many vehicles have a pressurized coolant recovery system called an expansion tank that makes opening the radiator unnecessary. These systems are considered "sealed" because the safety pressure ...

Dear Tom and Ray: I have a 1987 Dodge D50 4x4 truck. The truck's cooling system has a problem of overheating when I get to altitudes over 8,500 feet. The radiator fill cap is rated at 9.5 pounds. It ...