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

I just did an inspection on mine while waiting on ignition parts and everything looks good and the piston had a nice film of oil.I run 87 octane 40 to1 two stroke oil. If it lubes my high reving weed eater it should be good enough. I also run the the timing retarded a few degrees. While this reduces power it make starting easier. Running one spring I run a tank of fuel without stopping and the head temp only reaches about 105 f. My thoughts on running camp fuel at 55 octane and any advanced timing could cause detonation and possible damage. I see where some add wd40 which will burn and possibly not leave residua! lube for the coasting strokes. I also stand the engine on its end and apply some 30 W oil to the of the piston for the wrist pin. For what its worth I may be wrong but I'm not far from it.