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

Bump What ratio do you guys use?

Not sure I succeed at maintaining a specific ratio. Perhaps something like 40 : 1 may be in the ballpark. If when running it seems to be exhausting a lot of oil, I use a bit less on the next load, while if it doesn't seem to be exhausting any oil, I will increase the amount added to the fuel.

BTW, I mostly use Coleman Fuel, which is essentially "White Gas" or otherwise known as camping stove and lantern fuel. I do have some Aviation Gas that has a fairly high octane rating, and still carries a little lead if I understand correctly, but hardly ever use it as it seems to offer no real advantage. Still, it is expensive fuel that I got for free (don't ask) so it does have some appeal, as long as I am careful in my use of it!