Every time I fuel with #2 diesel in North Dakota & Montana - my fuel mileage drops by 20%
Doesn't matter what time of year I fuel or what station I fuel at - same lousy mileage.
Tried Cenex premium diesel with minimum 48 cetane rating - Flying J - independent station in the past couple days.
With & without diesel additive.
It is not the wind or the direction I am headed either.
This is annoying ....
Jim my mileage drops 10- 15% going west from eastern MT toward about Butte. It's the same for the most part on HWY 2. When headed west you are going up hill and westerly winds.
I think it's all that Big Sky. It just SEEMS to take forever to get across Montana !