From what I have seen, my truck usually operates between 195 and 200, but from what i understand anywhere around 200-210 degrees is perfectly normal and healthy, and a little hotter from what I saw on one website will get better gas mileage... just a little though if any at all is what I would say. from what I have seen in my research for E-fans that is pretty close to what they recommend them to be set at, they will never keep the engine at the temperature where they are set at, they will just start working then. Hope this helps
