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Thread: Overflow tank
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post #3 of (permalink) Old 08-09-2019, 09:52 AM
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Join Date: Feb 2016
Location: Madison, AL
Posts: 2,107
I don't know the specifics of your FJR but the overflow hose from radiator cap area correctly goes to the bottom of the reservoir no matter the water cooled vehicle. This hose blows and sucks. Hot steam has to bubble through cooler liquid in the reservoir. When engine cools liquid is sucked back into the radiator.

2018 F-150 XLT SuperCab 4x4 2.7L
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