Dash readout V's actual

[Jay2TheRescue]

Originally Posted by trollbait

Just filling to the brim isn't a guarantee of getting the same amount of fuel in. Wayne Gerdes of CleanMPG uses a jack to tilt the cars in order to make sure he lets all the air out of the tank. He got 10 gallons over the F150 rated tank size in.

I've been with Wayne on drives. Being 6'4" and 240 lbs I always seem to be bouncing on the back bumpers to get more fuel in.

[luckypants]

The computer MPG on my car has been 7.5% optimistic for my entire ownership (5500 miles so far) but I have seen some 'blips' as high as 12% out. I put this down to gremlins in the recording system. My MPG via fuelly is pretty consistent, so I'm happy its not more serious than a gremlin. I'm keeping tabs on the average discrepancy as it is possible to enter a correction factor into my computer, to make it read closer to real measured figures.