Quebec, a tank full of gas reduces the amount of oxygen that could otherwise come into contact and oxidize with (rust) the metal PLUSSSSS SS it reduces the amount of condensation that can form in the tank and become water contributing even more to rust formation. FULL TANK IS BETTER THEN LEAVING IT EMPTY, PERIOD HOWEVER, thats NOT the end of the story. Its true gas can gum n varnish up and that can mess thigns up. THEREFORE the addition of gas stabilizer is a must when letting her set with a tank full. IN ADDITION its good to coat steel or cast iron with say a protective film of oil which reduces oxygen contact and oxidation (rust) right????? ? THEREFORE I add a small can of low ash two cycle oil to my tank full of gas being of the opinion it can leave a light oil residue that coats and prevents rust cuz oxygen cant come in contact as much. I often, after the gas n 2 cycle oil is well mixed and ran through the engine n carb, then drain the carb for long periods of storage. That way the oil film can prevent rust PLUS theres less gas to gum up n possibly varnish the carb. I sayyyyy y Full tank of gas,,,,, ,,,with Sta Bil and Two Cycle oil added,,,,, ,run her to mix n coat things,,,,, ,,,, drain the carb and leave the mag or distributor with the points OPEN IS BEST WAY TO STORE TRACTORS Until convinced otherwise,,,,,Thats my story n Im stickin to it lol John T, retired electrical engineer in Indiana
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