If mama has a problem with you using the kitchen oven for your engine, then you could use the crock pot/antifreeze method (I bought a small crock pot for $10 at a local drug store).

As for breaking in engines, here's what I have heard. First of all, follow the manufacturer's recommendations... And, if you have ever read Engine Clinic in the old RCM, Clarence Lee recommended breaking the engine in by running a tankful through on the ground, then flying the engine around at an easy pace. The trick when flying was to just use easy manuevers (shallow climb-out, not full speed, use a race-track pattern, anything that would not stress the motor). Run the throttle up and down to change the speed.

He felt that by going easy on the engine for the first few tankfuls would heat-cycle the engine and help to break it in faster.

You have a ringed engine (obviously) so just keep it on the rich side to keep the engine temps down and to flush out the metal particles as the ring wears in.

Just my $.02

Bob