I bought a new 2020 Duramax 2500 6 weeks ago and just turned 4000 miles. When I picked it up it had 1/2 tank of DEF, I have filled it up once and now in 1/4 of a tank. So basically 1-1/4 tank of DEF IN 4000 miles. Does this seem right I know on my dodges and Ford I would get a lot more miles out of a tank than that.
How often are y’all filling yours up. This is my first GMC ever
How often are y’all filling yours up. This is my first GMC ever
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