Re: fuel tank capacity
As low as 18 gallons, as high as probably 40. Is there an access hatch somewhere that you can see the top of the tank? Most have a tag somewhere that identify the gallons. My 18 footer says 23.<br /><br />However...I agree with rottonray that mixing in the tank is generally not a good plan, it should be premixed, then dumped in. But if you're sitting right now with a partially filled tank of pure gasoline, I'd recommend just siphoning it all out and burning it in your car or something, then you can start over with an empty tank and start pre-mixing with proper ratio. If you guesstimate your in-tank amount wrong, your engine could suffer badly. A less ideal alternative # 2 would be to guess very conservatively and put too much oil in...a few fouled plugs and heavy smoke would be your only real risk. Still would be very difficult to get it stirred up properly in the tank.
