What't the highest oil temp you guys have seen under racing conditions on the roadcourse?

I'm pretty sure I remember a couple guys knocking around numbers in the 240-250 F degree range, without oilcoolers.
On a side note, how are those defi gauges.

p.s. the reason for the flag on the title line, is the in order to win you first have to finish (and oil in the car helps).