Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

You probably don't really need more oil in your fuel mix as it doesn't really burn away and tends to hang around in the cylinder for quite a while I find. As for the other lubrication points, I think most any fairly light machine oil should work fine. I use 3 in 1 (20 wt) with occasional applications of PCL (Breakfree) just to keep the older applications of used oil from getting gummy over time.

Great experiments you have going, and like others I look forward to your eventual conclusions and possibly a video!