Jams,
I don't know about all the other motors but mine need to run around 210-225 as that is where they make their power. I have seen the NASCAR guys come in and tape off most of their grills on cold days because they couldn't get the motors up past 200. That also helps their downforce. If your fan is running you might try shutting it off and also stopping the
oil to the
oil cooler to see if that will bring your operating temp. up.