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JasonG · 05-16-2011, 09:14 AM

I found a big change in going synthetic in the axles.
With the trailer I am stuck with 4.10 gears.
Your Cummings will handle the taller gears better than my Chevy.

05-16-2011, 09:14 AM	#8 (permalink)
JasonG Master EcoModder 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	I found a big change in going synthetic in the axles. With the trailer I am stuck with 4.10 gears. Your Cummings will handle the taller gears better than my Chevy. __________________ I can't understand why my MPG's are so low..........