I get the same exact thing man. socal keeps it hot for me. I get about the same numbers as you have right there.

Stillen oil cooler will get rid of that I had the same problem then I got the stillen racing oil cooler and I drive n LA traffic in 100 degree heat and it never goes over 220 well worth it

i hit that temp on my way to vegas last year. it was 110 outside i was just going 65 up a hill. I live in cental Cali, i hit 230 everyday during the summer on my drive home from work. getting the cooler next week.