After reading this post, (I know post is a little old), I dug out my Jon-e hand warmer. Still have original instructions, and it says: "Use only these fuels for best results, Jon-e Fluid, Energine...
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After reading this post, (I know post is a little old), I dug out my Jon-e hand warmer. Still have original instructions, and it says: "Use only these fuels for best results, Jon-e Fluid, Energine...