While both fuels work well for powering grills, they do perform differently. Moreover, there are fewer portable models that use standard gas as their fuel source. Standard gas grills are filled by pouring gasoline directly into their tanks- which can be a problem for convenience while camping. Propane grills, on the other hand, generally use a prefilled, high capacity tank that is swapped out for another and is refilled by a professional. More importantly, propane canisters can come in small, 1lb cartridge-style designs- which are the kind you’ll most commonly find in purpose-built camping grills. Performance-wise, standard “white gas” produces more heat than propane and burns more cleanly without leaving any odor, while propane burns slightly color and can occasionally leave an odor. The difference is lessened in the case of infrared grills, which burn much hotter and use less fuel in general. So while many overall prefer natural gas, far fewer camping grills offer this option, and the difference may not be worth seeking out regardless.