i know its a different motor but my hemi gets up to 220 in the summer here in AZ without a problem, rarely does it go over that. Engines now a days have hotter temps often to curb fuel consumption, hotter it is, less dense the air, less fuel better economy. Those that take issue with the high temps have changed the fan t-stat to a lower tmep so the fans runs harder and longer to keep the engine cool.
Unless you've tweaked the engine over and above stock, you should be able to ride it hard as hell and have it still be within parameters. In the instance of my car or the Z, both are designed for spirited and fast driving.
If you are using full synthetic oil, these temperatures shouldn't be a problem, even on the longer term. Synthetics just don't break down like conventional does even though synthetics are heavily derived from conventional, the end product is quite different.
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