Interesting info. Zippo fluid vs. Ronsonol. Let me add a bit to your Zippo comments. As most Zippo owners know, Zippo will replace the "guts" of your lighter and replace/repair the hinge at no cost to owner. After some time, the flint wheel becomes worn from repeated use. Also, gets clogged with flint particles and needs to be replaced from time to time. When you send the lighter in for repairs, keep the flint spring.
Have you ever changed a flint and had the flint spring depart the lighter at warp speed never to be seen again? The spare flint spring is priceless.
The address to return the lighter is:
Zippo Mfg. Co., 33 Barbour St., Bradford, PA 16701

Boone