Quote:
Originally Posted by dfb
2017 3500 aisin, 4:10, montana 3610... lowest 8.6, high, 12.2, average 10.5...empty...15..
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2014 3500 SRW Aisin w/ 3:42 diff
2017 379RD
I run in 5th gear 1850- 1950 RPM
65 - 70 MPh
10.5 - 11.2 MPG unless of course a head wind then it's between 8.5- 9.5
I run Amsoil Cetane Boost in every fill up unless the cost of fuel is cheap enough to outweigh the Cetane Boost cost
I have changed all gear boxes to Amsoil Synthetic at 12K miles, tranny lube is Chrysler recommended