I've run it 40 miles past when the low fuel lamp lights up on multiple occassions and can only get about 20 gallons in it at the pump. So either it has a 6+ gallon reserve after the needle shows empty or the tank is even smaller than the manual states... One of these days I may run it out of gas with a gas can in the back just to test it out. Anyone else notice this?
Absolutely, the reserve is there, my light comes on at 19 gallons, I've run it within a 1/2 gallon of what the tank is supposed to be. For fun/necessity, I made up a little chart of how much is left at the various needle positions. That extra 5 or 6 or 7 gallons comes in handy when towing and getting 9 mph.
Good to know, thanks for the heads up. That saves me from testing it.