After all the discussions, for years....still folks want to break in an engine on one oil, then switch to a lean mix of synthetic. Get yourself an oil that is readily available, run a ratio of 32-50:1, tune that engine and fly it. Breaking in the engine, you want to heat cycle it. Tune it properly, fly it, let it cool down fully and repeat. No need to change oils later....as the engine breaks in, makes more power, requires a little further fine tuning....great. I see the break in procedure on the ground as being a great way for people that don't understand the importance of tuning and cooling, to get a head start on ruining their engines. Now if you are new to gas engines, and/or you'd like to spend some time familiarizing yourself with the operation of the carb...etc, fine. But a tank would suffice, like others have mentioned above.