Want to top off your gas fill-up? Don't try it or you will make a BIG MISTAKE!!!

Now I realize why topping off a gas tank at a station can be dangerous. It is almost similar to a portable circular saw that you use when you pull it out of the wood and suddenly some additional force adds enough "umph" in that power tool to force it so much back that the saw blades directly hit you, causing serious injury.

This injurious phenomenon is called "kickback."

Topping off is a bit like "kickback" in your power saw---in this case--it is not those maiming saw blades that hurt you--it is the gasoline that kicks back out of the fuel pipe of your vehicle, causing a spill of volatile gasoline on the ground, or on the gas nozzle, or in worse cases, ON YOU!!!

Topping off means when the automatic gas pump shuts down when the gas tank is full (you will feel that signature "click" to tell you that the vehicle's tank is full enough), you are tempted to add more fuel to the car by trying to press the nozzle trigger to add more fuel than the vehicle's fuel tank can bear, in order to try to save yourself a few trips to the gas station. Big mistake! Right now, topping off is thwarted in the newer, modern, gas pump systems in most gas stations--once you feel the shutdown click, you cannot add any more gas at all so you don't top off. But at a few other stations, there is still a risk of top-off. Don't do it--because the fuel might "kick back" from the fuel pipe cover of the vehicle and spill its gas on you, creating a dangerous situation. The worst of the dangerous situations is that you could end up on fire by spontaneous combustion by the gasoline alone, even without any sources of ignition (such as static electricity) or sources of fire near the gasoline that you spilled after top-off.

It is not worth the risk!!!