Yep, I have a 1953 Manley Model 32 Aristocrat. In the midst of doing a teardown on it. Coconut oil and Flavacol are the only way to go. NEVER, I mean NEVER, add anything else to the kettle like caramel, cinnamon, etc. Its a quick way to ruin your kettle and commercial poppers run so hot it will liquefy and/or burn that stuff instantly, as well as create a nice stinky smoke cloud! (Don't ask me how I know)