so I usually trust the fuel computer but ive always had this nagging feeling its wrong.
just drove from 24941 to lock haven pa, then from lock haven pa to Clarion PA.
524mi total,,
I inserted 17gallons of fuel to fill the car back up. I also think I have something like a 22gal tank also. Not too shabby ,, especially when I have oxygen sensors (new) just kinda wedged into / in between exhaust header openings.
My trip computer randomly jumps down to 3mpg at highway speeds. Haven't looked into it too much, but I am getting around 25mpg consistently freeway. I think I've wiped a cam lobe and my crankcase is pressurizing. I can get my dipstick to pop up and I get blue smoke on hard acceleration now.