I guess I have a lemon or something, I get 13 pretty much all the time wether I am in town or on the freeway. I wish I was getting 16 to 20. 2002 Supercrew 5.4L 3.55's.

 

Make sure that all your filters are new, that your tires are inflated correctly, and that your brakes are not sticking.

Mike

 

I get 15-16 mpg on average on my 5.4L supercrew, and I drive conservately most of time. Apparently so do most of guys here. How are you able to get such high mpg? No offense intend, how do you calculate the mpg? I reset my trip meter every time I fill up the tank then when it's time to fill up again then I look at my trip meter for total miles travelled then divide it with the total gallons it took me to fill up the tank. Usually I get 300-325 miles before filling up the tank again with approx 20 gal.

 

I've been geting 13.5-15 around town with a 5.4L, 3.73s, and stock tires. I drive fairly quick..

 

Well dias.....325miles is approx550km'sand 18gal tank,which is what we have.A little math of 18 gal divided by 325 miles or 550 km's.....equals 18.05555 miles per gal.What's so strange about that????I drive city hwy hard and soft.I can easily get 19 miles per gallons with soft driving the entire tank.

 

umm.. I have the small tank and it holds more than 18 gallons.

you can't figure gas mileage very accurately that way.

You need to mark your mileage down with a full tank, drive until it is low, fill the tank, and divid your miles traveled by how much you just put in your tank.

 

I take the miles indicated with stock tires and divide that by how many gallons I put in. On pure highway at around 75-80, I get 400-420 miles out of 20-21 gallons.

F150 SCab, 5.4, auto, 4x4, 3.55LS

Mike

 

Has anyone tried an Edge Evolution Tuner on there 97 or newer f-150, i am thinking about trying one on my 01 supercrew.

 

You have an 18 gal. tank? You must have the "small tank" option, the smallest listed tank on a F150 is 24.5 gal. I was making the same mistake when I started calculating MPG, didn't realize how big the tank is. Best way is to run the tank close to empty. Fill up and note how many gal. it took, reset the trip odometer and drive. Next time you fill up subtract this about from the previous amount of gal. this is the amout of gal. that you used and then note the number of miles traveled, divide miles/gal.

I get a consistant 14-15 mpg on my 2002 5.4 with 75% city/25% hiway and I am not afraid to stomp on the gas

 

25Gal tank is pretty standard on and F150.

 

Ya maybe as I said before ......Us gallon or imperial gallon.My truck has a canadian 18.5 gallon tank which probably works out to 25 gallon us.There is a big diffrence with our usa members.I wish they would take this into consideration.The USa is still using it's own method of measurment.It adds up quick.18mpg in canada is great miliage for a truck....Which I would assume is 15mpg is good in the USA.....I could be pissing someone off,but it's not intentional.I would just like to get to the bottom of this US and imperial gallon stuff.Am I out of line here or what?

 

sounds about the same. I didn't realize your gallons were different.

 

Curious if you ever got the Evolution tuner and if you did, your thoughts?

 

Just chiming in on the MPG issue. 2003 5.4 Screw with 45,000 miles on it. I also drive like a slug. Mostly city miles. I have been using the FTE ownersite maintenance program to track my fuel consumption since 12/23/2005. My average is 12.78 MPG US. No chips or mods, just stock. I just wonder if all the people stating 19, 20, 21 MPG are calculating correctly. Maybe I am just envious!

 

I used a superchips tuner on my 97 4.6 w/183000mi. I did notice my mpg went way down. Since I have returned the tuner I constantly get 15-17mpg 70% highway and 30% city. I just filled up this morning and got 17.2mpg. I did drive more conservative last time. I get less if I stand on it a lot.