This is the second time this has happened. When I fill up my tank the gauge doesn't reach full. It will go over the full line for a second but will sink right back under. Today I filled it up with 16 gallons and still the same thing. I'm gonna check for codes cause it happened to me last time I filled up with 16 gallons and I only got 16mpg. Anyway anyone else expeirence this?

 

you may to fill the gas tank until the trigger on the pump unclick by itself. regarding to 16 mpg, you need dr. fuelmax to improve mpg.

 

put some redline SI-1 cleaner in there...its a very powerful mix...and is BITOG approved...about $7 at autozone...good stuff