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

  So, if I was to make a standing tank for the exhaust the oil will
stay on top (lighter than water?) and the relatively clean water
could be pumped back into the boiler and reused.  I presume the
feed pump would be crank driven and working all the time, like on
those old-timey German engines w/feed-pump I'm still waiting to score.
Ditto for a dynamo steam plant.

  Then again, I've never run an engine long enough for a function
like this to serve a purpose other than proving it works. 

Thanks for the replies,
Wayne

Hi Wayne, It doesn't always work this way with steam cylinder oil because it is designed to mix well with water and steam and thus will stay in suspension for a much longer time than regular motor or vegetable oil. It is great for the cylinder but not for the boiler.