SRKNK,  I have used this type of pump in an industrial setting.  Hog processing plant in the grease(liquified animal fat) removal.  The oil was around 175-250 degrees f.  The standard rubber stators would blow out after two weeks of operation.  I talked to the pump manufacturer and we ordered a different type of stator that worked well.  I would suggest talking to the manufacturer of the pump and see what they suggest for temperature operating ranges of your pump.
I hope this helps,  David