At 06:59 PM 11/15/2006, you wrote: >I looked over the specs for the oil temp on my GPASC 2180. It says that >cruise temp is supposed to be between 190 and 200 degrees. That is 10 >degrees of variance. Does this seem reasonable when the OAT can vary >magnitudes more than that? >Daniel R. Heath +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10 degree variance in oil temp is a nit that most reasonable people won't pick at. That, I'm sure, would be ideal but there are too many variables to cast that number in stone. It will vary during different phases of flight and with large changes in OAT. Oil temps too cool (<180) will not allow the contaminates to be "cooked" off and temps too high can cause the oil to break down. The too high end depends on the oil used and who's opinion you seek. I grin real big when the oil temp in my 0-200 stays between 180 and 210 and pressure between 20 psi idle and 40 - 50 psi cruise with hot oil. Larry Flesner
