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Old 09-07-2011, 08:48 AM   #23 (permalink)
JasonG
Master EcoModder
 
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Join Date: May 2009
Location: Charlotte NC / York SC
Posts: 728

05 DMax - '05 Chevrolet 2500HD
90 day: 18.48 mpg (US)
Thanks: 120
Thanked 56 Times in 52 Posts
That is for brake disc cooling.
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I can't understand why my MPG's are so low..........
21,000lb, 41' Toy Haulers are rough on FE!
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