fuel mileage took a dive - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 12-17-2010, 08:15 PM Thread Starter
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fuel mileage took a dive

Ok, I know these things don't get great mileage, but I usually got about 16 or 17 at 70mph. Took a drive today for about 45 min at 70 down the interstate. Used 1/4 tank of fuel. Mileage computer shows average of 9.8mpg........ HELP!!!

'08 250 Lariat 4x4 c/c s/b
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S&B Cold Air
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post #2 of 2 Old 12-19-2010, 04:00 PM
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I don't know if I would trust the computer. With that said it could be a combination of things. Bad fuel, regen, gauge going out. I would fill the tank and start documenting ever thing.

2008 FX4 SC SB 6 Speed 3:73LS, Transflow, H&S Mini Maxx, KEM Tunes, S&B Intake
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