I am a newbie. Once I am done flying. I make sure sure I burn all the fuel in the engine and then use a good amount of after run oil. I find commercial after run oil too expensive at $2+ for a few ounces.
I have been told that several alternatives can be used: Automatictransmission oil, Marvel air tool oil, and Starret tool and instrument oil.
What should I use?
I have an OS .46 engine.