I was cleaning my engine after a crash a while back, my Venus 40 had my new OS 50 on board. I had been having problems with take off, the plane would suddenly veer to the right. I was not sure why, but it did. On the last flight, it veered right but more severely than before and I over-reacted and slightly panic'ed. Yanked on the aileron rather than the rudder.. a little dislexic I guess.. and flipped it over at 3 feet and full throttle, and that was that.

The engine was full of sand and dirt, so I removed it, checked it out, wiped it down and washed it with water. I flushed the engine with fuel (took off the back plate and flushed it with about a half gallon of fuel) then for some reason, I hit it with Windex. The engine came out bright and shiny with no brown fuel residue. Now, I had been using a fuel with turbine oil (S&W Hi-Rev 15% nitro) so the residue may only have been a stain that would come right off under the circumstances, but it cleaned up very nicely.

But the Ethelene Glycol bath sounds like a good, sound solution to me.

DS.