Ford Lie O Meter
Posting Guru
Joined: Jul 2013
Posts: 1,726
Likes: 2
From: Connecticut
In my 2011 diesel the fuel used Gage is within a 1/2 gal. When I leave the station it is all down hill for 5 miles. I coast most of the way, just to watch my mpg read 99 mpg which goes down as soon as I start using fuel. 
Note: actually very accurate.
Note: actually very accurate.
Cross-Country
Joined: Feb 2014
Posts: 61
Likes: 9
From: Cicero, IN
Easy test to do. Record the fuel used from the dash info screen. Remote start a couple times for 15 min each and see if it has changed at all. I can tell you that my trucks value doesn't change and it explains why in the winter my gallons used is off a couple gallons a tank (along with MPG being off vs hand calculated) and in the summer it is very close.
Elder User
Joined: Apr 2013
Posts: 714
Likes: 1
You want to see great miles to empty? Just before you pull into a fuel stop, reset your instant fuel milage bar and try to coast up to the pumps, if you time it right, you could be showing over 30 mpg when you start to fuel and it will calculate MTE on that. I love messing with my buddy who drives a dodge by doing that, some times after fillup I can have 775 miles to empty showing because I trick the lie o meter like that.
It will correct it self as it figures out the MPG it thinks you are really getting.
Other than that, mine is pretty accurate too.
It will correct it self as it figures out the MPG it thinks you are really getting.
Other than that, mine is pretty accurate too.
My mileage and usage are very close to accurate, but I have aftermarket remote start which is just like using the key, dash and radio come on, that doesn't happen with factory starter so I'm skeptical that it's counting usage then as it's not powering up the dash cluster.
Elder User
Joined: Apr 2013
Posts: 714
Likes: 1
My issue could still be chalked up to my technique, but I typically fill at the same pump at the same station, pointing in the same direction every time and ALWAYS wait for the foam to go away and fill to within an inch of the top of the neck, so that liquid fuel is almost running out. My dash will consistently show that I have used at least a gallon less than the pump shows. Of course, the pump could be inaccurate too. I don't rely on the meter to show actual mileage, but as a driving aid to gauge how well the truck and I are doing at our efficiency. While I didn't buy the truck for its mileage, it is nice sometimes to see how well it will do. I would assume that the computer calculates gallons used by injector pulses rather than gauge level. Additionally, if the computer counts remote start as idle time as well, I'm sure it also counts fuel used during remote start. JMHO
Hotshot
Joined: Nov 2013
Posts: 10,107
Likes: 96
From: Hempstead, TX
No leaks anywhere and no fuel spots on the driveway after parking overnite. My fuel station is less than a mile away from home, so if it was leaking, I would see it. I fuel this one the same way I have fueled all of my vehicles in the past - including other Diesels.
Elder User
Joined: Apr 2013
Posts: 714
Likes: 1
Might be screwing up the sensors, the manual says not to overfill the tank but to stop when it clicks, doesn't really explain why though I don't think. Try it a few times in a row and see if it improves accuracy.
Hotshot
Joined: Nov 2013
Posts: 10,107
Likes: 96
From: Hempstead, TX
Sultan, the manual on my former F-150 said to stop on the first click because it had the capless fill and going past the click would spill fuel through the vent between the flaps. This system does not do that and I have never read to stop on the first click on this truck. While I appreciate the advice, the accuracy of my computed mileage isn't that important to me as I would still hand calculate out of old habit anyway, and I would rather have the extra range by having my tank full of fuel rather than foam. As long as I'm not wasting fuel by putting it down the side of my truck or spilling it on the ground, I will continue to fill as I always have. My dash indication still helps me track how my driving style or conditions are effecting my mileage, and maximizing it is a game for me at times, but it really isn't why I bought this truck. Thank you for the suggestions though.
Elder User
Joined: Apr 2013
Posts: 714
Likes: 1
Sultan, the manual on my former F-150 said to stop on the first click because it had the capless fill and going past the click would spill fuel through the vent between the flaps. This system does not do that and I have never read to stop on the first click on this truck. While I appreciate the advice, the accuracy of my computed mileage isn't that important to me as I would still hand calculate out of old habit anyway, and I would rather have the extra range by having my tank full of fuel rather than foam. As long as I'm not wasting fuel by putting it down the side of my truck or spilling it on the ground, I will continue to fill as I always have. My dash indication still helps me track how my driving style or conditions are effecting my mileage, and maximizing it is a game for me at times, but it really isn't why I bought this truck. Thank you for the suggestions though.
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Hotshot
Joined: Nov 2013
Posts: 10,107
Likes: 96
From: Hempstead, TX
Fair enough, I might have been thinking of my 150 as well. Still how much more after the click are you getting in there? I used to do this as well but it took forever for the foam to go away and I figured I was wasting more time than I was gaining mileage and never got much over half gallon more in the tank without spilling it anyway. Now if it was a couple hundred gallon tank and you got 20 more gallons it might be worth it, lol
If I set the nozzle to fast fill, I can get another 5 gallons in after the first click as the foam dies down. I usually leave the nozzle on the lowest setting though and wash all of my windows while I wait. Doing it that way, I can usually get another 2 gallons after the foam dies off. If I was in a hurry for some reason, it wouldn't bother me to leave the foam alone and leave.
Posting Guru
Joined: Jul 2013
Posts: 1,726
Likes: 2
From: Connecticut
I slow pumped my 02 and it could get 3 to 4 gals. more than when I pumped it fast. That was because of the foam. On the 2011 what it read for fuel used was what I would be getting in the tank with in 1/2 a gallon. It didn't matter weather I pumped fast or slow. which doesn't make sense but that is the end result. Only difference is the fact that 02 I pumped after the pump clicked off (you could see the foam). 2011 you see diesel when it clicks.
Thread Starter
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Senior User
Joined: Apr 2005
Posts: 131
Likes: 0
Just as an update to my original post, I reset the trip meter last nite as I shut the truck down. This morning I remotely started the truck as usual as I got dressed and poured my coffee. The truck ran for about 13 minutes before I got in and turned the key to run. The litres used was at zero and the trip timer was still at zero as well. So there you go. The fuel used when running with the factory remote is not calculated until the key is turned to run.
Cross-Country
Joined: Feb 2014
Posts: 61
Likes: 9
From: Cicero, IN
Just as an update to my original post, I reset the trip meter last nite as I shut the truck down. This morning I remotely started the truck as usual as I got dressed and poured my coffee. The truck ran for about 13 minutes before I got in and turned the key to run. The litres used was at zero and the trip timer was still at zero as well. So there you go. The fuel used when running with the factory remote is not calculated until the key is turned to run.
Mountain Pass
Joined: Jan 2008
Posts: 248
Likes: 19
From: Ft Worth texas
I fill my truck up to first click every time.I do not have remote start. My truck is always a half mpg "pessimistic". I am averaging when commuting in traffic around 17.9 to 18.1 and around 11.1 pulling my trailer by compute gallons to mile calculation. My computer will show 17.1 to 17.5 and about 10.5 when pulling. So i always get to smile when i do the actual math and find out i am ahead a little. i was thrilled when i got over 20 actual when traveling empty. My idle time is almost nil and my average speed is 45 mph at 8400 miles!