Quote:
Originally Posted by tomato88
You mean clicky clackity topping off? I heard that it is actually bad for the car as the overfilled fuel will evaporate and go to places that is not designed to go. Also you end up paying more for less gas as some of the fuel will shoot back into the pump.
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Apparently has to do with getting raw fuel into the charcoal canister on the emission control system. That's why they don't want you to overfill.