I know I don't know as much as many members here, but I just don't like 200 for our cars. I know that new cars run that hot but they are designed to run safely on the edge. EFI, knock sensors, computer spark control to retard timing, etc..

Personally, I don't want mine going over 180 if I can help it. I took my big block charger on a road trip this summer, sat in 3 hours of stop and go traffic to get a total of about 20 miles. It got to 210 in stop and go. No, it didn't puke and overheat, but I still didn't like it. I'm trying to come with some solution to get it to run cooler at idle. as soon as the car moves, even 20-30 mph, the temp drops right to 170 where my temp sensor is set (electric fans running off sensor)