i have a 95 240sx se, i went autocrossing last weekend, when i got there the gas gauge was reading bet. 3/4 to 1/2 full...when i went twice around the track i noticed that the gauge was reading full...
and when i was driving home the gauge eventually started to move and the gauge was at 1/2 with 225 miles..that's what i normally get on a full tanks of gas, mostly local driving, i know theres a difference with highway and local....but do i take the chance to see it's still accurate ( no gas light

) kind of worries me on what i should do .....any advise?as soon as my mechanic get back from he's vacation i'm taking it to him, but he's not coming back until next week...
thanks mike