Quote:
Originally Posted by JRMichler
My truck has all openings fully covered, except for the one under and behind the bottom of the license plate. You can't see that one, but it's the width of the license plate and maybe a little over an inch wide.
My truck cools just fine. Last summer the engine temperature rose about 7 degrees on an extended upgrade at 93 degrees outside temperature. The cooling fan clutch did not engage.
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how much mpg did your grill block add?