Ive got a 2008 4.6 screw cab just made a trip from el paso tx to lubbock and with a full tank to exactly half i did 300 miles was wondering if thats a good thing or not any input would be greatly appreciate. Also was going 75 to 80 most of the time with the air on

 

sounds right...how did you know it was exactly half ?

 

cause its what the gauge said lol. my gauge was at half a couple of weeks ago and i filled up, only put in 9.5ish gallons.

 

Those gauges arnt exact, they float but Ive only done 416 miles w/ a 4.6 and shes dry, thats being stuffed full and getting on a hwy and running 75 the whole time with a few mtns threw in.

 

29 Gallons for me and it stayed on empty. Took about three days for it finally to say the truck was full. I have a slight problem that needs to be fixed! As for gas mileage, I have never pulled higher than 19.8 according to the computer at any time and that didnt last once I got off the highway after 300 miles and started driving in town.

Brandon C.

 

Now i only got 380 and a lil less than half but only city now

 

Do you have a 36 gallon tank? I'm assuming this because 300miles on half a tank seems to be alot for me (I have a 26 gal)
How do you know how much fuel you've used?

 

Its a 26 and the gauge shows half and ive been keeping track of my mileage

 

I've got the 4.6 in my 08 screw 4x4 and only made it 480 miles at 70 and that was driving on flat land through Oklahoma and Kansas. I've got the 26 gallon tank as well.

 

You do realize 300 miles at 13 gallons is 23mpg, right? This sounds a little too high.