What happened to my mpg?

Part of it will depend on what kind of mileage you are covering. The more data you have to work with (miles travelled, gallons consumed) the more accurate your calculations will be.

A significant change like you are mentioning, though (~33%) would suggest to me that you have either misentered or completely omitted some data through oversite.

 

do you park the truck somewhere that somebody could just be stealing some fuel every once and a while. Anything mechanical to cause that much of a change would be noticable

 

You're seeing the same thing I am.

I suspect it's the blend of fuel. Ever since the winter blends have hit the market, I've noticed a serious decrease in MPG. Up to 2 mpg in some cases.

I don't know what the #### is going on. I've never seen a reduction like this myself.

All my gauges reflect the fall off in mpg.

yes, yes I know about high winds during winter months...don't go there.

 

Can't help you there. Unless you passed through MS during September. We released our winter blends early this year, by executive order of the Governor.

I'm willing to bet, you were shorted at some stops though. If you do a quick search. You'll find MANY fuel stops that were investigated over the past few months, over pump tampering.

 

I am just curious what truck, trans and gears do you, how much HP is your M11 putting out?

 

Every fuel up at Flying J?