Lately I have been seeing posts concerning RedLine oil usage. One of my 215's has 200 flights and the other is approaching 300. The engines have excellent compression, run in the 180 degree range and no valve sticking. Now I do mix 44;1 and rarely run the engines at full throttle. Can anyone tell me what the damage or failures are that are associated with the use of this oil. I am willing to stop using it if there are valid reasons. -Tom