Thread: DEF Usage
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Old 11-14-2013, 08:15 PM
8robracer3 8robracer3 is offline
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Join Date: Nov 2013
Location: Morgantown, WV
Age: 48
Posts: 2
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Vehicle: 2013 Dodge Ram 2500
Trim Level: Laramie Longhorn
Color: White
Engine: 2011-20?? 409ci (6.7L) Cummins Turbo Diesel 350hp 800lb/ft
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Default DEF Usage

I just took delivery of a 2013 Ram 2500 Crew Cab 4x4 with the 6.7 Cummins. It had 900 miles on it from the dealer. The DEF gauge was almost full. I drove the truck 600 miles towing a 5000 lb trailer and about 100 miles around town and the DEF gauge is now close to empty. I was told the DEF tank should last about 10,000 miles from the dealer. How many miles should it last and how big is the DEF tank? Not much info in the owner's manual.
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