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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 ...

Caps on motor oil bottles, pop bottles and beer bottles keep the liquid in. But a radiator cap is not any ordinary cap. Though it seals the cooling system from the outside, the radiator cap is ...

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 ...