>      In your opinion and experience; which fails the soonest - outer or
inner oil
 >      control o-ring?

 I have no idea Jean. Bruce Turrentine might be able to answer that as he has
 overhauled many engines.

 Paul Lamar

By my observations.........The outer O-ring is usually the one that dies
first. Sometimes disintegrating by more than 50%! I recommend that the
e-shaft thermal pellet be bypassed/disabled in all engines. This one
modification can greatly enhance the life of the rotor oil seal O-ring.
Bruce Turrentine

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