2015 GMC Duramax Exhaust fluid useage

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06-18-2014, 06:03 AM

Costo

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2015 GMC Duramax Exhaust fluid useage

I am new to diesel pickups as far as owning one. My new 2015 GMC Sierra 2500 HD has a 6.6L Turbo Duramax. It seems to be using a lot of DEF. I have 1500 miles on it and I have added about 3.5 gallons to top the tank. Is this normal

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07-19-2014, 10:19 PM

4x4manonbroke

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Yes ... But You may want to talk to the dealer as 1500 miles @ 3.5 gallons = 428.571 MPG of DEF .... thats seems fairly reasonable ..

typically 2 tanks of Feul to 1 tank of DEF = need to refill or dang close ..