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Condensation Above Coolant Cap?

The Growler
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The Growler Member

The Growler

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After being away from the joys of Boxster ownership for a couple of years, I took the plunge again last month with a slightly used 2003 "S" and experienced something I didn't recall from my last Boxster: condensation on the inside of the rear trunk lid over the coolant cap. "Faulty cap" immediately came to mind, was confirmed by dealer, cap replaced . . . but now I still have a persistent thin film of moisture (as opposed to droplets) in the same spot. The car is not overheating and the coolant level is mid-point between min and max. Is this normal? Does the cap vent vapor to accomodate expansion of the coolant?

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Tool Pants Member

Tool Pants

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Posted

You should not have condensation above the cap. The newest style cap ends in 01 and I trust that is what was put on. Is the cap screwed on properly? If so, all I can think of is it might be another bad cap.

tank15.jpg

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