I use kerosene (Petroleum, fotogen in swedish) in all my lamps, but I'm going to give a Carl Holy "Volksbrenner" as a Christmas gift to my parents. They use "Lamp oil" (n-Paraffin) in their Kosmos lamp.
Should I recommend them to only use kerosene for the Carl Holy lamp, or is n-Paraffin ok to use also in lamps with flamespreaders?