Quote:
Originally Posted by Otto
Use both: Coroplast on the sides and aluminum screen near the hot places like exhaust pipes and mufflers. That will allow heat to be drawn off rather than collecting. Aluminum screen is a superb heat conductor and dissipater.
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That would also electrically insulate the aluminum from the frame of the car, as long as it wasn't too wet underneath. The downside of using a different metal in the screen than in the body of the car is that it opens up the possibility of galvanic corrosion. Aluminum + iron + wet salted roads = not good.