2014 Duramax - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 2 (permalink) Old 06-16-2014, 01:49 PM Thread Starter
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2014 Duramax

I just upgraded from a 2011 Ford 6.7 to a 2014 Duramax (2500 HD, extended cab, 4x4 with standard bed and 17 in. tires).

I am primarily interested in running long miles with light/no load and am looking for MPG. The Ford engines, based on what I read, did not see any unloaded MPG improvement with upgraded air intakes, anyone have any experience with this on the newer Duramax?

Any other upgrades/changes to improve MPG without voiding mfr. warranty or breaking the wallet?

Out of the box so far I've seen 18.5 MPG average on a 2,000 mi. round trip from southern NJ to eastern KY (lot of mountains); 20 - 22 MPG over 10 minutes on fairly level highway at 65 mph w/ cruise control; and just shy of 19 MPG on my 45 minute commute to/from work through the NJ pine barrens (very few stops).

These are all computer numbers, my one hand calc from the KY trip showed about 1 mpg less than the computer.
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post #2 of 2 (permalink) Old 06-16-2014, 05:43 PM
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Leave it stock or if you want to change something ask them if they cover it and all down stream damage for 100,000 miles if not?
Just a thought!

1988 ford van fresh overhaul, 1991 nissan pick-up 1993 Caprice 2000 GMC S10 Blaser 2007 nbs 3500 GMC 4x4 crew-cab long box 17 inch single wheels Duramax Alison. BW turnover Ball. Furakawa FL35 loader. Retired, HD mechanic, worked on engines all my life. Fabricator welder. electrician. in the process of finishing my new shop. Live in Rock Creek B.C. Wife has a fruit stand.
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