Good idea if you are certain that the oil gets that hot (again - re read the oil mans explanation on here for oil types and heat ranges)... so gauge first and cooler if needed

My 500 was missing its undertray when I first had it - the one that goes under the intercooler and holds the entry air flow in. One of the first things we noticed was how much cooler the car ran once we fitted it.

A Pace pre cooler is also on our car. Before fitting it we noticed temps rising a lot quicker when giving it beans - eg around Silverstone. The water coming out of the T4 must be silly hot on exit so, despite opinions to the contrary that I've seen expressed here, it worked for us and some of the other cars that we know.

Of course - we run a good old fashioned smiths gauge from the block itself... so no guessing like the Ford version - which has differed every time we have changed the sensor.

Just our experiences - but as Mike says - without good gauges it all becomes guesswork anyway.