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Old 01-31-2013, 08:13 PM   #69 (permalink)
Demolite
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Join Date: Oct 2009
Location: Finland
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Carina - '93 Toyota Carina E GLi
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I didn't look into any numbers myself, just figured that as some cars come with finned oil pans and the oil pan is usually in the air stream below, maybe thats what the manufacturer wanted. In cold weather it won't likely make a noticeable difference in running oil temperature. Not sure for a hot summer day though. I think it's safe to say that it depends on the vehicle.
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