Originally Posted by InfernoRedXfire
It's really not a good idea to let the gas level get that low. You risk sediments at the bottom of the tank being picked up in the fuel line. Especially as cars get older.
Good advice.....
It's also a bad idea with these high gas prices. Some of the "less used" fuels (read, PREMIUM) do not get their tanks refilled as often. This increases the chance of you getting sediment, or condensation in the form of water, in your tank.
I find myself filling up by the time I reach a quarter tank........I view it as cheap insurance.