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Old 10-24-2011, 01:23 AM   #7 (permalink)
JasonG
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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)
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Didn't think I would see a difference. I have heard of pumpkin temps being recorded and change noted. Of course that has 90W in it and my tranny only 30W......... I think........ some old ones did use 90W........... time to climb under and check !

I guess for $50 I could try both and win all around. Thanks for the ideas !
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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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