of my F350 Crew Cab LWB 4X4 that says it has a 38 gallon tank having only a 32 gallon tank??? Went and filled up for the first time, after the tank full that the dealer gave me, and I could only get a little bit over 32 gallons in it. I know about the foaming causing the pump to cut off but I sat there and waited for the fuel to settle down and it still wouldn't take any more fuel. If it is a smaller tank then all of the numbers for mileage on the message center will be off by 6 gallons.

 

That is intresting, i wondered the same thing. I have heard of a few members harponing the tank to get the full amount of fuel without having the problem you are.

 

Check this out: https://www.ford-trucks.com/forums/6...e-problem.html

This weekend I ran it 98 miles past 0 to Empty and only put 25.2 gallons in a 29 gallon tank.

 

I harpooned my 02 but haven't heard of anyone doing it to an 08. I had around 40 miles left going by the message center and with an average of 13.7 mpg's from what the message center say, that would have left me with 3 gallons in the tank. Add the 32 that I filled up to that amount and I get 35. I guess maybe it does "pop" soon without it being harpooned.

 

Sounds like my deal. On that link there is another link to where a guy did the "Harpoon" mod on his 08 and he says it's the same as the old trucks. Looks like my first mod will be this one.

 

Still thats not fixing our fuel gauges. I am hoping that maybe since I ran past E it will recalibrate the gauge.....