Two questions/ comments here... With the frigid winter temps here in the midwest my coolest CHT gets down to 290-300 while running LOP. The other 3 are in the 330 range. Other than running ROP I really don't see how this can be changed. Secondly my oil temp doesn't get over the magic 180 degree mark in cruise to burn off the moisture the Lycomings hate so much. It does get over the 180 mark in climb but cools down to 176-178 or so once cruise configuration is reached. Does this make my 3 hour cross country flights as useless for engine longevity as a ground run?