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Which rust slower? A white car or a flat black car?


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Anonymous Poster

Aug 15, 2007, 9:14 AM

Post #1 of 2 (5220 views)
Which rust slower? A white car or a flat black car? Sign In

I learned today that heat makes rust grow faster. This makes me wonder, Will a white car rust slower because it reflects the suns heat better? Or will a flat black car rust slower because any water that gets on it will evaporate faster?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 16, 2007, 6:11 PM

Post #2 of 2 (5218 views)
Re: Which rust slower? A white car or a flat black car? Sign In

Interesting thought. In a car the damaging rust happens from the inside out as paint at all isn't as good on the out-of-sight areas and that alone keeps moisture longer. You are also comparing flat to gloss? Just based on heat and all other things the same I think hotter would rust faster than colder. It used to be that black paint had more pigment and simply held up better but that is strongly about who decided to put what in the paint to begin with.

The biggest deal is the quality of the steel but even lower grade steel will do well if protected well with good paint. Metal and heat like exhaust systems rust faster at the cooler end. Before almost everything became stainless you would replace two tail pipes to every one exhaust pipe (front) if the same grade,

T







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