4.2 mpg?
Senior Member
Joined: Dec 2006
Posts: 43,539
Likes: 817
From: Joplin MO
Not the right search term - "ford owners manual" gives you this for the first non-sponsored hit:
https://www.fleet.ford.com/maintenan...ls/default.asp
https://www.fleet.ford.com/maintenan...ls/default.asp
Not the right search term - "ford owners manual" gives you this for the first non-sponsored hit:
https://www.fleet.ford.com/maintenan...ls/default.asp
https://www.fleet.ford.com/maintenan...ls/default.asp
our tanks are 24.5 US Gallons, about 25 if you fill the neck.of course I was stupid and forgot to write down how many gallons I actually put in.
<facepalm/>
But going off of what Raptor said,
09-01-09_2107.jpg?t=1251942819
09-01-09_2108.jpg?t=1251942857
09-01-09_2116.jpg?t=1251942892
402.8 into 25 = 16.112
Everything is pretty much the same as last time,
50/50 city/highway
I don't drive aggressively...
glc also said,
"The ONLY way to calculate gas mileage is fill the tank, zero the trip meter, then when you get fuel again, fill it again and do the math - miles driven divided by gallons put in. The size of your tank does not figure into the calculation ANYWHERE.
The most accurate calculation will be filling it both times at the SAME pump the EXACT same way."
sooo for next time here's the info from last night:
09-01-09_2111.jpg?t=1251943292
trying this again...
thanks everybody for the input so far!
I really do appreciate it!
Edit: Okay, I think that if this is right, then I feel pretty stupid...
You don't divide the miles you get on a tank by the size of your tank.
You take the # of miles divided by how many gallons you put into your truck when you fill up. I have heard of one person putting anywhere near 25 gals in our trucks. Most common number are 21-23 with the light on.
You take the # of miles divided by how many gallons you put into your truck when you fill up. I have heard of one person putting anywhere near 25 gals in our trucks. Most common number are 21-23 with the light on.
argh...
Well, at least I learned one thing.
I shouldn't decide on math as a major.
haha....
Last edited by animated_zombie; Sep 2, 2009 at 10:10 PM.
Yeah, next time you fill up, take the number of miles on your odometer (or Scanguage) and divide that by the number of gallons the pump shows you pumped out of it.
That's your (pretty decent) average MPG on that tank....
That's your (pretty decent) average MPG on that tank....
Senior Member
Joined: Aug 2008
Posts: 1,553
Likes: 1
From: CO
basically if you werent counting at first this is the way to start figuring your gas mileage.
1-fill up your tank to full.
2-zero out your trip odometer
3-drive it till you want to fill it up again
4-fill it up to same point you did the first time and preferrably with same pump
5-divide your trip odometer number by how many gallons you put in
example you drive 200miles and you put in 10 gallons-200/10=20mpg
6-get your figure and reset odometer for the next time
TIPS- for me it seems that the more often you fill up, the more money you save. for some reason it seems i get better gas mileage when i fill it from 3/4 to full than i do if i let it go to 1/4. try filling up more often, see if it helps. also this helps if the price of gas goes up say by .40 per gallon. putting 5 gallons in at that jump is better than putting 15. sure if the price goes down you dont save as much but in my opinion the price goes up 10 times before it drops at all so your most likely going to have this happen while its rising. get a cold air intake or a higher flow exhaust preferrably both. letting your truck breathe is the best thing for it. my 04 f150 heritage V6 went from 18.9 stock combination driving to 22.5 just with a cold air intake. if you dont want to spend the money, just go with a higher flow replacement filter like K&N. they are about $60 on average but will most likely give you .5-1mpg. i got 19.9 with one before i got my intake. by a tonnue cover, they help with gas mileage too
1-fill up your tank to full.
2-zero out your trip odometer
3-drive it till you want to fill it up again
4-fill it up to same point you did the first time and preferrably with same pump
5-divide your trip odometer number by how many gallons you put in
example you drive 200miles and you put in 10 gallons-200/10=20mpg
6-get your figure and reset odometer for the next time
TIPS- for me it seems that the more often you fill up, the more money you save. for some reason it seems i get better gas mileage when i fill it from 3/4 to full than i do if i let it go to 1/4. try filling up more often, see if it helps. also this helps if the price of gas goes up say by .40 per gallon. putting 5 gallons in at that jump is better than putting 15. sure if the price goes down you dont save as much but in my opinion the price goes up 10 times before it drops at all so your most likely going to have this happen while its rising. get a cold air intake or a higher flow exhaust preferrably both. letting your truck breathe is the best thing for it. my 04 f150 heritage V6 went from 18.9 stock combination driving to 22.5 just with a cold air intake. if you dont want to spend the money, just go with a higher flow replacement filter like K&N. they are about $60 on average but will most likely give you .5-1mpg. i got 19.9 with one before i got my intake. by a tonnue cover, they help with gas mileage too
When you fill a 25-gallon tank from empty, your adding about 150 pounds. For a V6, i can feel when I have weight on board, so when you feel the truck is heavier, you drive more conservatively (more careful) so your not so violent on it. As the gas goes down, the truck gets lighter and its easier to control so you tend to speed up quicker, stop later than usual, etc. BUT if you keep it pretty full (between 3/4 and full) almost all the time you tend to drive more careful, thereby saving fuel
get the point? thats just what ive come up with while sitting on the crapper.
Senior Member
Joined: Aug 2008
Posts: 1,553
Likes: 1
From: CO
you bring up a very good point and I've noticed this as well and here's what I've came up with:
When you fill a 25-gallon tank from empty, your adding about 150 pounds. For a V6, i can feel when I have weight on board, so when you feel the truck is heavier, you drive more conservatively (more careful) so your not so violent on it. As the gas goes down, the truck gets lighter and its easier to control so you tend to speed up quicker, stop later than usual, etc. BUT if you keep it pretty full (between 3/4 and full) almost all the time you tend to drive more careful, thereby saving fuel
get the point? thats just what ive come up with while sitting on the crapper.
When you fill a 25-gallon tank from empty, your adding about 150 pounds. For a V6, i can feel when I have weight on board, so when you feel the truck is heavier, you drive more conservatively (more careful) so your not so violent on it. As the gas goes down, the truck gets lighter and its easier to control so you tend to speed up quicker, stop later than usual, etc. BUT if you keep it pretty full (between 3/4 and full) almost all the time you tend to drive more careful, thereby saving fuel
get the point? thats just what ive come up with while sitting on the crapper.
Senior Member
Joined: Aug 2008
Posts: 1,553
Likes: 1
From: CO
like i said i beat the crap out of mine all day...i just filled up today, went on the highway going about 75 and then just randomly getting on it up to 95 a bunch of times. did a few launches up to 70 from stop lights, probably like 5 or 6 and drove around a bit while making an 8 minute video of how it sounds full throttle up to 90 a bunch of times and keeping it in a lower gear longer to hear the deceleration exhaust tone and stuff. been doing all that today, have about 80 miles on the trip and the gas needle still hasnt moved.
Junior Member
Joined: Sep 2009
Posts: 1
Likes: 0
From: FL
98 F150XLT supercab flareside V6 5 speed gas mileage
I regularly check mine with every fill.
15 mpg is usual for everyday driving.
Mine has a fully stock 4.2 with 5 speed stick, stock wheels and stock tire sizes.
Keep in mind if your tire diameter is not original your odo may be way off.
15 mpg is usual for everyday driving.
Mine has a fully stock 4.2 with 5 speed stick, stock wheels and stock tire sizes.
Keep in mind if your tire diameter is not original your odo may be way off.
Technical Article Contributor
Joined: Aug 2008
Posts: 1,670
Likes: 0
From: Lorena, TX
My truck has a 22 gallon tank. I filled up right before a trip to Dallas yesterday. I drove up to Allen nonstop and did a tiny bit of city driving then stayed there for a while and then drove straight back. My trip odometer right now is at 240 miles and my gas gauge reads right at half full. I was going about 75mph the whole time hitting 80mph at some points. Unless my math is incorrect I was getting about 21.8 mpg. This was with the 22's on as well so it may be a little lower..
Senior Member
Joined: Aug 2008
Posts: 1,553
Likes: 1
From: CO
like i said i beat the crap out of mine all day...i just filled up today, went on the highway going about 75 and then just randomly getting on it up to 95 a bunch of times. did a few launches up to 70 from stop lights, probably like 5 or 6 and drove around a bit while making an 8 minute video of how it sounds full throttle up to 90 a bunch of times and keeping it in a lower gear longer to hear the deceleration exhaust tone and stuff. been doing all that today, have about 80 miles on the trip and the gas needle still hasnt moved.
Member
Joined: Oct 2008
Posts: 44
Likes: 0
From: Pittsburgh
I have a 98 with 265/75/16 tires and i get between 11 and 12 all the time... a buddy of mine has a 97 but just told me he was getting close to 17 mpg how do u change gearing and tuning? would it help? i would like to get 33 or 35s if they fit stock but i dont want to eat the gas mileage suggestions?