According to the manual, the RRS fuel tanks hold 27 gallones. I think the most I have filled is around 23 gallons. I admit with the RRS, I don't play the empty fuel tank game as much as I do with my other cars, partly due to the fact that the RRS can't be pushed in neutral. If the motor dies, you are pretty much glued to the pavement. In the past, I have coasted or pushed my out of fuel cars more than a couple of times, but don't want to chance it with this thing. Plus I'm a couple of years older and it is known that keeping the fuel pump submerged prolongs it's life. Has anyone filled close to 27 gallons?