Hi all I am on tank of gas # 6 on my new to me truck and thrnDEF fluid gage has barely even moved How long do you get on a tank of DEF fluid and how big is the reservoir? Thanks
My DEF gauge sat at F all summer, then we took 1000 mile road trip to PA with the camper and I used 1/2 tank of DEF. This is my first diesel truck and one thing I found out is that DEF has an expiration date, and stale DEF can clog up expensive parts.
I took the camper out one more time and DEF is at 3/8...but camper is winterized and it might stay at 3/8 till next year, so I'm not in a hurry to go out and buy more just yet.