Forum Discussion
Cummins12V98
May 10, 2013Explorer III
Vulcaneer wrote:
15K on your truck and only filled DEF once? I have 12K and have gone through about 20 gallons. Of course 4500 miles was towing at 11.5 avg towing MPG.
My 10 K oil change, the Alabama dealer topped off all fluids, EXCEPT DEF. I asked him why not? He said, "Oh we don't do that as part of an oil change." I replied, Then why did you tell me you topped off all fluids?" His response, "Well we did." My response, "BullShoot...Go top off the DEF". They did. Fifteen minutes later the truck cam back to me. "OK...DEF full now. It took ten gallons. That'll be $56."
Last time I insist the dealer fills the DEF tank again at oil change. I didn't even know the tank would take 10 gallons, even if COMPLETELY empty. I had added 2.5 gallons back 2000 (towing) miles before, when I got the 500 mile to empty alert.
Did you expect him to top off the fuel tank also?
About Travel Trailer Group
44,057 PostsLatest Activity: Mar 12, 2026