Well, probably kicking myself by sharing this Roger, as there´s so many wrongs in it from en engineering point of view, but i´ve only been running it on pure Zippo fluid until now.
First off, to properly hone it/run it in, i wanted it running as abrasive as possible, to see if i could spot a difference, once it had a bit of time on the clock.
Until now the running characteristics has only been improving, and seing how it throws greasy stuff from the exhaust already, i´ve chosen to stay with pure Zippo fluid.
I might regret this decision some day, if i have to take it down for a rebuild due to my choice, but fortunately i know who to blame then.