Posted for PTACKABURY@aol.com:

 Erik:  I think I was a few miles ahead of you flying south yesterday  at
 11.5k, returning to Chino from Marysville in N94PT (Lancair IV), at least I
 think
 I remember your N-number as we switched freqs for flight following.
 On Friday pm as I climbed out of Chino to 12.5 my oil temp topped at 220dF
 too.  That was about 20dF higher than normal, likely because it was indeed a
 hot day.  Since I was worried I might get to the fly-in before the field
 opened I idled along at about 50% power so the oil temp soon dropped below
 190dF.
 However if it had remained at or below 220dF I would not have been
 concerned.  Of course less is better, but with quality oil on ISA + 30 days
 I think
 cruise at 220dF is OK--especially if your engine is relatively new and still
 tight.  Mine is a Performance TSIO-550 with only 100 hrs and I expect  the
oil
 temp to drop 10 -20 dF during the next 100 hrs, at least that is my
 experience
 with other new engines.
 My advise: fly more and worry less...
 paul