Yeah the VDO fuel guage is a joke. I like how they "calibrate" the guage by drawing inconsistent lines between 1/4, 1/2, 3/4..... Always seems like the first quarter in bottomless and will take you 130 miles, then it drops like a stone below the 1/2 way mark - but I'm not complaining and mostly rely on the trip odometer anyhow. But Jimmy if you're getting really wild readings then it could be a ground problem in the instr cluster, as i'm sure you've already figured out.

Peter, thanks for the info on fuel tank sizes...... I guess MB wanted 300D's to travel the same distance as 240D's in between fill-ups. I would like to upgrade to the 21 gallon tank - thinkin I'd get an easy 550+ miles before refilling. Yes the larger capacity fuel tank is probly the only 300D item that can actually improve upon the 4-spd 240D...... heheheh.