hmknightnc wrote:
msmith1199 wrote:
Brad777 wrote:
I fill it at home with a small gas jug. When the fuel tank is full it will not take anymore fuel. I then cap it off and wait one to three weeks. Then when I fill up the tank again I measure how much fuel it took to full.
Gas expands and contracts with hot and cold. If you're filling it to the brim you are leaving no room for expansion. As it expands gas will go out the vent tube and then it contracts and leaves you room to put more gas in so it can expand out the tube again.
Bingo! Ding Ding
Ask me how I know this? Okay I'll tell you. Because I'm a private pilot and if you fill the airplane up with fuel in the morning and let it sit out in the sun all day, you can sit and watch the fuel drip out of the vent tube. Now I've never measured to see how much fuel comes out, but at $6 a gallon for 100ll AV Gas, you don't fill the tanks to the rim and watch it leak out. This can actually happen even if you fill it during the heat of the day as the fuel coming out of the truck likely will be cooler from the truck and then will heat up once it's in the tanks on the plane in the sun.
