how long can one store a gas engined motorhome?

When put to the test none of the "stabilizers" works very well. Aviation 104 has 0 ethanol and last dang near forever. Had it in my dually that was stored for 4 years with this in the tanks. New battery and it fired right up, and never missed a beat. Ethanol is the enemy, if you have to store it for long periods of time....put non ethanol fuel in the tank. It's not as good a Av gas, but it better in the long run.