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Old 11-02-2009, 07:43 PM   #4 (permalink)
Master EcoModder
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Join Date: May 2009
Location: Charlotte NC / York SC
Posts: 726

05 DMax - '05 Chevrolet 2500HD
90 day: 18.48 mpg (US)
Thanks: 107
Thanked 54 Times in 50 Posts
And to think i used to use just plain old $0.99 ATF to clean the gunk out of engines ..........

Disconnecting the exhaust before the cat is a good idea as well, if its got a joint.

I can't understand why my MPG's are so low..........
21,000lb, 41' Toy Haulers are rough on FE!
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