ORIGINAL: William Robison
Be sure to run the engine dry after a flying session, use a fuel with a castor blend oil, and add after run oil before putting it away.
Just squirting the A/R oil in and flipping the engine a couple times isn't really enough - douse it well and then spin it a bit with your starter to be sure the oil goes all through the inside of the engine.
Bill.
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I put so much air tool oil in my engines that I must remove the glow plug, put a rag over the hole and hit it with the starter to clear it, when it is time to fly.
There is no reason to put your good glow plug through all of this. It could lead to a mangled coil. Not good.