Can't really compare anything we do to what a cup car is doing.. They don't fart without a reason for it. LOLOne last thing I promise. 210F max oil temp is too cool, especially if running E85 which will cause a cooler running engine for a variety of reasons. 210 is below boiling and water does get into oil through many ways mostly being carried by ethanol which has a strong affinity to it, and just from the humidity in the air. It is desired to be boiled off in the oil above 212 of course. Last post on it and if you and Shaun are comfortable with it that's good. Cup engines run oil temps at 265F by the way.
They run their water temps 280F+ without worry, not sure most people's cars are designed to handle that