Quote:
Originally Posted by undercoverbrother
Do you have kids that drive........
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The cat refuses to take his road test if they won't let him play Frédéric Chopin on full blast over the stereo while he drives.
Quote:
Originally Posted by Fuzz
Fuel pumps are cooled by the fuel in the tank. Running low all the time means the pump doesn't have as good of cooling, and can burn them out.
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To add to that, the pump's placement within the fuel tank means that a low fuel level can result in the pump taking in air when the fuel level is low, which will also generate heat within the pump.
Avoiding the sediment in the bottom of the tank was the usual justification when fuel tanks were made of metal, but it's far less of a concern these days since plastic fuel tanks don't corrode. Even then, it still helps keep the fuel filter free of debris picked up by the pump should there be any present.
Lastly, it's just a more practical way of keeping the vehicle running. It's why I fill the washer fluid reservoir when I first see the 'low' indicator first come on instead of putting it off until later. If I keep pushing it, eventually I'll run out of fluid when I actually need it or when it's inconvenient to re-fill.