DEF Math
The owner's manual says my truck has a 5.5 gal DEF tank. I waited until I was down to 1/4 on the gauge, just above the red zone, and added a 2.5 gal box of Blue DEF from Advance Auto. Now the gauge ...
Forum Discussion
Peak Blue DEF is changing their packaging and pushing that it is very pure, less contamination, for as much as I use I will continue to use it.
I also fill at 1/2 tank, and it goes to full, yes having a gauge is nice.
I also fill at 1/2 tank, and it goes to full, yes having a gauge is nice.
