see if it can pump clean oil
     with out air at 6000 RPM? We have had one report wherein it was claimed
     the output of the pump was converted to froth above 4000 RPM.

Paul,
This one has me baffled. The motorcycle world has used variants of the gerotor
pump for RPM's over 14,000. Without a air leak or other problem I can't see
how you would froth the oil at all. Is the unit still making oil pressure? That is
very hard to do with frothed oil!
Bill Jepson

 
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