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Old 03-30-2019, 12:22 PM   #61 (permalink)
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Originally Posted by Greg S View Post
8.5 hauling a 40' trailer with 2 cars and loads of heavy tools in it. Averaging about 65-70 MPH. Really seemed to suck up the DEF with the big load on it.

DEF usage is a ratio to fuel usage.

Use more fuel, it will use more def

Should be somewhere close to 1.5 gallons on DEF per 100 gallons of fuel.

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