I topped off my tank with two gallons of gasoline I didn't need several months back just to get on Fuelly with my third fill. Now I am carrying around 9 gallons of gasoline I won't use until December at the earliest. Poor planning on my part.
The Volt gas tank is pressurized to keep the gas fresh longer. It will do maintenance mode and use some gas if it needs to. We live outside of town so we use enough gas we don’t have to worry about this.
Be we still my only get gas once a month or two.
over the weekend I drove 100 mile and used .30 gallons of gas.
I just had an "old fuel" burn last week and it dropped my lifetime mpg form 678 to 626 mpg. 5,999 miles since I last put gasoline in the Volt. So my fillup doesn't register on Fuelly. Rats. I only put 2.1 gallons in even though I used 4.7. I figure that my "old fuel" burns will be shorter if I put less gas in the car. Not sure if that logic will work in the real world....