Listen to this, I know a lot of hay truck drivers since im the hay sales manager of a large farm and ranch. Anyways, i was talking about the emissions equipment on all the new trucks with a driver that has a 2011 peterbuilt, and he said hes been filling the DEF tank with water for about a year now, and hasnt had any problems! I got to thinking, why wouldnt that work for the pick-ups as well?? DEF (urea) is basically mostly a water mixture anyways.
I just thought this was interesting and though id share. Even though my 6.7L doesnt run on DEF anymore anyways
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