Optimus Polaris Optifuel. With this versatile and award-winning Optimus Polaris Optifuel stove, you can expect an all-rounder that runs on almost any fuel (gas, pure petrol, kerosene, diesel or kerosene) and thus delivers a hot meal anytime, anywhere and in any weather. This is ensured by an outstanding, reliable burner that requires neither nozzle nor accessories to be replaced on the road. If you use LPG gas cartridges, you only have to choose between the 4-season mode in cold weather or the fuel-saving mode. With the integrated magnetic cleaning needle, the nozzle can be cleaned quickly and easily while cooking.