> I flew the Ross PSRU 200 hours on my Long EZ (rotary)
> and after 2 failures I am installing a Marcotte PSRU.
> Ross recommended using engine oil and Marcotte says to
> use gearbox oil that requires a reservoir.  

   This has brought back to the surface a question I've had
niggling about in the background.  The planetary gear system
Tracy uses was designed to be lubricated by Dexron/Mercon II
or III.  What, if anything, are we giving away for the
convenience of using the engine oil pump?

Dale R.