RE: The Guy at my LHS Said after run oil is an old wives tale, and there is no need to buy it
Disconnect fuel line.Take your air filter out. Pull the throttle open all the way and pour some into the carb opening. An extremely knowldgeable rc driver said to use a teaspoon but i usually use 5-10 drops. Turn the engine over a few times slowly. DO NOT PUT ANY IN THE GLOW PLUG HOLE. This is just an easy way to ruin your engine. The after run oil will work its way in there. If you take the plug out you risk getting dirt in your engine and wearing out the threads.