is it bad to overfill your gas tank
Labels: Personal Safety. When the gas pump nozzle clicks off automatically, DO NOT add a little more gas. You need extra room in your gas tank to allow the gasoline to expand. Topping off your gas tank is bad for the environment and your wallet.Any additional gas you try to pump into your tank may be drawn into the vapor line and fed back into the stationâs storage tanks.(Of course you're still paying for this extra gas).opping off your gas tank is bad for the environment and your wallet. Any additional gas you try to pump into your tank may be drawn into the vapor line and fed back into the stationâs storage tanks. (Of course you're still paying for this extra gas).