I had one of the first CSF rads and monitored temps, I believe I saw about a 10 degree drop under heavy street use. I would easily on a daily basis break past 210 and now I am just under or over 200 depending on the weather & driving.
I will hit 210+ if I am sitting for a long time or in horrible traffic but the past year I have avoided it mostly with some changes in my routes I go home.
Actually it is better than that:
CSF Radiator: Reviews
I use to hit 220-240 and now I see 200-205.
