I don't have much knowledge on genset either. I was advised to get a gas generator by an oil pipe inspector who must live in the middle of nowhere in Alaska 4 months of the year. He suggested to keep your car, generator, emergency light (kerosene), stove fuel the same. I have few 55 gl drums in the shed out back. I am looking into whether I should store some gas and diesel (one of the cars) in larger quantity in them.