Another newbie question.
After reading Paul Lamar's cooling text: http://home.earthlink.net/~rotaryeng/how-to-cool12.txt I was left wondering if water coolant could be replaced by a liquid with a higher boiling point (such as oil).  That combined with running the coolant at a constant higher temp might lead to an increase in cooling efficiency since the difference between the external air and the coolant could be increased.  Is there a danger letting the temps of the rotor housings operate at a higher temp as long as we are below the melting point by a safe margin(say 350 vs the water cooled 200-250)?
Ignorance is bliss!  :-)

MikeJ