What brand gas additive for motorcycle storage?

You can find what you need at your local auto parts. Get " fuel stabilizer ", and add the correct amount to a full tank of high test fuel. Run the engine for about 5 minutes to let the stabilizer mix. The full tank prevents any moister which can cause damage. Also, remove the spark plugs and with an oil can squirt a couple of shots of Transmission Fluid in the spark plug holes. This prevents piston ring lock up. With the spark plug wire attached to the plugs which are still out of the engine, crank the engine for 2 seconds. This ensures that the oil is completely around the piston. Replace the plugs, remove the battery into the house where it is warm, trickle charge every so often and check the water level. Only add distilled water and charge only at 2 amps. You are ready for storage, and ready for start up in the spring.