[Steve C.]

"To alleviate the creation of excessive moisture, the optimal operating range of engine oil is no less than 212 degrees, which is the point at which the water in the oil will evaporate. Vehicles with an oil temperature thermostat (which we’re going to discuss here shortly) are typically set right at or slightly above this mark. Conversely, you don’t want to run the oil above roughly 240 degrees, as Speed tells us, because you begin to significantly reduce the life and operating ability of the oil, as oil containing moisture doesn’t flow or lubricate properly."


https://www.streetmusclemag.com/tech...-you-need-one/

And with a note regarding the articles comment above 240 degrees. On occasions I've seen my oil temp rise to 240 or higher at highway speeds like 90 mph out on the tollway during summer. With synthetic oil it can be a different ballgame. I called Red Line Oil years ago about oil temps approaching 250 degrees and the tech guy chuckled, then gave a reassuring replay not to worry.

( Information offered for general interest, does not represent any endorsement of the products )


.