[thstone]

Your temps are typical.

Primary reason for Porsche running the temp where it does (a bit on the high side) is to burn water out of the oil which allows them to recommend longer oil change intervals.

Further to the info that JFP noted, if the coolent never gets to ~180F, then the oil never gets near 212F and the water tends to stay in the oil.

Thus, if you are already changing oil at less than the recommended intervals, then there is no risk in using the lower temp thermostat and running lower coolent and oil temps.