[dnemmers]

Depends on your power needs and how often you plan on running it. Gasoline fuel doesn’t last as long as propane, but makes more power (you’ll often see different wattage for each in a dual-fuel setting).

If the generator is mostly going to be sitting around with infrequent usage, either go propane or research gas fuel stability and storage treatments.

Maintenance will depend on the model, but it’s going to need spark plugs and oil changes at a minimum.