Here's a quick tip to make sure you're getting the highest-quality fuel at the gas pump: If you see a tanker truck parked at your gas stop, filling up the station's reserves, drive right on by. The reason? The addition of new gasoline to the reserve tank can stir up sediment and other debris inside the tank. Those materials settle to the bottom of the tank over time, but during refills they get stirred up into the mixture again, which means they can end up in your own gas tank.
ANDREWS MCMEEL SYNDICATION