Yep!! I add Heet every time I fill mine up.I've looked at those they have it at harbor freight think they were $60 a piece. Only problem with metal is they can sweat inside if not completely full, just like my old Honda atvs with metal tanks.
I stood in front of the can and opened it and was literally sprayed head to toe in fuel while smoking a cigarette.You were handling gas while smoking?
Darwin would be proud...