My truck has always idled sitting at around 150 degrees, now it’s idling at around 180-185. It would also run on flat ground around 150 and now it’s around 170. It regens at around 210 and then drops to around 195 when the fan kicks on. I replaced the thermostat out of caution cause it has 595K miles, but still does the same. Is this change ok, or is there something else that may be going on? It’s not throwing any codes. Thanks in advance for any advice.