Quote:
Originally Posted by RandallNeighbour
My guess is that this is caused by condensation gathering under the fan shroud. The motor's quite hot and cool air brought into the engine compartment may turn into water droplets.
The other thought is that the coolant overflow drain may be dripping onto that piece of the body work from the inside, although I've not researched this one or given it much thought before.
Someone with some serious smarts should get to the bottom of this for us.
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You rang??
Actually, the fan on that side is an exhaust fan, which blows outward to exhaust hot air from the engine compartment. So it is more likely to be ingesting hot air from the engine and blowing it out to the ambient air. I doubt that would cause the kind of condensation that would cause those rust spots. I've never seen them before, ever, on any Boxster. And I'm always either in the southeast, where snow is virtually non existent, or SoCal, where it is actually non-existent. Any chance it is related to snow/road salt or whatever they put on northern roads these days?
EDIT: Randall, I see you're from Houston, so that rules that out. I was looking at the other two people who mentioned having the rust holes, and they're from NY and CT.
Okay, so I'll revise my thesis: maybe it's because you all live by the sea.
