Quote Originally Posted by BlackW1dow View Post
going back to the temperature scalers, how do yall know that the low MPH is based on 0 MPH and the high is anything greater than 0? Just experience or is there something that says it?

Also what is too hot relative to coolant and oil temp? oil temp stays about 219F
In your XDF, you will find a parameter called "Fan Low/High MPH Threshold," which will be set to 0. This means Low is 0 MPH, and High is anything over 0 MPH. You can change this value if you want to change this behavior.

Coolant temp is up to you. The OEM thermostat is designed to actuate at 180F. Due to the reverse cooling of the LT1, this means the engine tends to operate in the 195F range.

Oil temperature is a factor of the oil itself. For Mobil 1 Full Synthetic 5W-30, the stock factory fill, it can more than happily handle oil temperatures of 356F. It will, for short durations, handle temperatures above 392F. This property of the oil is why the oil cooler was removed when GM switched the Corvette over to this oil in 1992.