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

The Saxonia is a pretty simple oscillator, so as long as you lube the cylinder contact points and the bearings (if those aren´t OilLite or closed rollerbearings) all is good.

Loads of arguments and opinions regarding lubrication, but unless you intend to run it for hours every day, it will hold up for the rest of your life with very little oiling.
It is good practice to have some oil internally on the cylinderwalls as well, and some usually can be sucked in on an oscillator like this via the exhaust, but going by the amount of older engines here, i feel that the wet steam in there under normal conditions of use, is enough to avoid any heavy wear on those parts.

I´d suggest getting a small bottle of Wilesco steamoil, if you just intend to steam it occasionally (once the initial interest to do so wears off).
It´ll last you a long time, since you only need a few drops with each filling of the boiler.

Loads of prepping movies out there, but since i had it on the bench for cleaning anyway, i just made this little "tutorial" of how i do on this type of engine.