As soon as funds allow I'm going to order some Amsoil cetane booster for my OS 160FX. I'll start on glow and switch on the fly to diesel. I'll try to adjust the compression and timing with head shims and prop size. Won't be optimum but it will give something to consider. I have a couple quarts of lamp oil so I'll give that a try first.
Do you think a diesel runs with more or less compression than a typical glow engine?
I don't think that will work well. Whos knows with the glow plug in there. Diesels run about double the CR as glow. So I'm not sure how you can start on glow and switch to diesel. You should still have some on the fly compression adjustment available for tuing to daily conditions.
http://www.edfinfo.com/diesel.html