I run a standard 180 stat, and an electric adjustable cooling fan control. Engine warms up quickly to 180 and then I can adjust the fan to come on where ever I want. I also have a switch mounted under the dash so I can run the fan continuously if I want. Gives me full control to run the engine temp where ever I want. Of course you have to have enough rad ( and fan )to do this. If I want to run at 190, I set the controller so the fan comes on at 190. Temp usually oscillates about 10 degrees as the fan kicks on and off.