Hi,

My test was far more abusive than the average modeler's flying. It was focused to answer my own questions since I fly for 30 min at a time at wide open throttle and pull very draggy loads with lots of propeller slippage. The engines really heat up. I posted the results to be of some use to the modeling community inspite of the "special circumstances" of the test. While this test provides more data than the average modeler, it was by no means conclusive on a scientific basis.

Personnally, I think the suggestions of Pat (Silversurfer) where he flies engines at partial throttle for 15+ hours is a better indication of engine wear for the modeler than the test I ran. However, both Pat and I have similar recommendations when it comes to oil. No thinner than 50:1, more oil = more power and there are a number of good oils both dino and synthetic. Most hobby engines try to dent mother earth ( and lose) before they are worn out and in many cases, the oil and mix ratio have no influence on engine longevity.

Elson