<font size="2" face="Verdana, Arial">Uh, not true ("old wives tale" actually). This would be true if gunk was floating on top of the fuel in the tank, or if the fuel pump was pulling fuel off the top of the load. Crap that settles in your tank is just as likely to get sucked in by the pump with the tank full or empty, since the fuel pump is located at the botton of the tank. Driving around is enough to disturb any garbage in the tank and get it to move around on the bottom of the fuel load, thus giving it a chance to get sucked in by the pump.Originally posted by GapBoyPCS:
If you usually drive your car almost empty, then you'd probably want a cleaning. Crap that settles in your tank would be going through the fuel lines and injectors. If your car is usually full, then you should be okay.