Def Tank Guage
I have just purchased a 2011 Discovery 40 X and was looking to see if there is a gauge to find out the level of your def tank. I the previous owner did not know. He just refilled it after each trip. ...
Forum Discussion
We had the same model as your Discovery and it was on the dash 4 bars that light us when full to that level. I never relied on it and had it figured out to fill the DEF on every 4th fill up.
