Is there any harm topping off your gas tank, almost to overflow? It's nice to be able to go longer between fill-ups. - Quora
Clean Air Council - Happy #AirQualityAwarenessWeek! You may not be filling your tank very often, but when you do, don't top off your gas tank! Spillage from topping off your gas tank
![Chad Livengood on X: "I've never seen a sign like this on a gas pump making a rational, economic and environmental case for not topping off the gas tank to squeeze a Chad Livengood on X: "I've never seen a sign like this on a gas pump making a rational, economic and environmental case for not topping off the gas tank to squeeze a](https://pbs.twimg.com/media/EpHvej4XMAQs559.jpg:large)