05-14-2008, 12:04 PM
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#16 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,530
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"It depends!" (TM)
Depends on what type of driving you do, how hot it gets where you live, whether you're running the AC.
Better to start larger, monitor your temp gauge and cooling fan, and close it off gradually.
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