Commercial paint stripper is fine! I use the liquid in a can because its cheaper than the aerosol. You sometimes need 2 coats if the paint is layered. A soft plastic scraper will work best and when its all clean, I use Mothers Metal Polish on it and I follow up with a good coat of Howards Feed & Wax! Really gives a great shine. Good luck and don't forget to post pictures of before and after!
Everything Cities Service
Specializing in old Gas Pumps