Cummins2014
TDR MEMBER
Whenever I've added 12 qts, it's slightly overfull. Enough to matter? Maybe not. But I put just shy of 12 in now regardless.
So what I am hearing the dipstick is gospel, the 12 quarts is not ?? I want 12 quarts in there . You 6.7 must be different then mine ,I drain , and fill with 12 quarts. It shows pretty much right on the full mark. That has to tell you something, dip stick not right, not drained properly, truck not level ,whatever.
It still makes sense to me to drain completely if thats two hours or overnight, whatever it takes to at least establish where 12 quarts puts you on filling it, if its over the full mark so be it, It's still a 12 quart capacity, and you have only put in 12 quarts.