Went to fill my truck up today and at a quarter tank left on the gauge it takes 17.5 gallons? Just seem that with a 27 gallon tank it should take more than that with only a quarter tank left.

Also my boss was telling me that he gets crappy gas mileage in the winter due to additives they put in the gas? I have never paid attention to it i guess but is this true? With this last tank i just filled up i got 14.2 miles to the gallon wth about 80% city and 20% highway. Seem good to you guys? Stock 2wd with 6800 miles on it.

 

If you were exactly at a 1/4 tank then it would have taken 20.25 gal to fill up. Sounds close enough to me without exact measurements. I get about the same mileage right now out of my '04 FX4 at 50% highway and 50% city, but I prolly put my foot in it too much.

 

You will get slighty worse mileage in the winter because they do change the fuel mixture some.

 

I wouldn't worry about the gauge - seems close enough for government work. Many manufacturers typically put a margin in the gauge - that is, when it first hits the 'E' mark, may still have a couple-three gallons left.

Gas formulation does change a bit in the winter, which results in slightly lower mileage. Essentially the formulation is to make the fuel more volatile - that is, easier to light off, but the trade-off is that there's less energy available per gallon as measured by the lower fuel economy.

Also, consider that during the colder months, one may engage in more driveway warm-ups, or leave the engine running where it would otherwise be shut down during the warmer months - these will hit your mileage numbers.

For the driving you do, 14.2 mpg seems to me to be right in the ballpark.

 

I have an 08 2wd all stock and I get about 13 of im lucky !

 

it actually clicked off before but i put more in because i didnt think it was full hahahaha.

 

well i have the massive 30 gallon tank and im hating the winter months except for the mudding now that i know that they do actually change the fuel mixture