There's a couple of servos in the my area that are out of calibration and a few times the pump has shown more than i filled up i go in and tell the attendant the pump are showing incorrect amounts they ask how do i know, i have to explain to them that i have 125ltr fuel capacity and the bowser is showing 140 ( or there abouts ) ltrs and i'm not totally empty!! They just look at you blankly and say " oh..." And don't do anything about it