watched keith blowing out his engines after use using a compressed air oil mixture and wondered how he introduced oil into the airline.
One fellow Model Engineer in the Toronto area build air powered model steam engines (he never runs them with steam) uses the FRL (Filter Regulator Lubricator) units from air tools and air tool oil and they work great.
thanks Charlotte and of course Keith that answers my question perfectly
Thanks for posting.
Dad said to fill the airline with oil then attach it to the steam engine and turn on the compressed air.
I hope this helps!