When I first got the truck, it would come on when I had driven about 370 miles or so, on an estimated 420 - 430 per tank and would take 26 - 27 gallons to fill up ..

Now it comes on after 325 - 330 miles, when I still have an estimated 420 - 430 per tank .. and it only takes 23.5 or so to fill up ..

I am getting better milage now than I was last year .

The fuel gauge still shows the same level as it did last year, but the trip computer shows different mileage driven.

so it appears to be coming on 3 - 4 gallons sooner.. any idea on why it has changed?

 

Mine always starts to "ding" at 50 DTE.

 

When my low fuel comes on and I go fill it up, i've seen anywhere from 3 gallons to .5 gallons left in my 23 gallon tank. This is right as the light comes on mind you. I pretty much don't expect to get over 350 miles per tank, but that depends on the driving. Rule of thumb, 1/8 of a tank left I fill it up. Once Ford comes up with Digital fuel quantity (electrodes measuring the resistance of the fluid - less resistance = less fuel) it will never be dead accurate.

 

I fill it up asap, when it comes on, just so I can see the other info, like temp odometer etc.. It's stupid the way comes on and blocks all of the other info on the display.

 

if you hit the reset stick, all that info cames back

 

I don't think a 23G tank is even an option. 27 is the smallest(I Think) and my LF comes on at around 330-370. Depends how im driving. I have a 27G

 

and it will remind you every 5 miles.

 

Damn. Guess I should RTFM