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I agree with all of this, I think we were all saying the same, mostly correct things, just talking about different sides of the argument.
Now the thing I am curious about is: running oil at a cooler temp (to a point) is a good thing, no contest. But running the coolant COOLER than what the ECU is expecting as a 'warmed up' engine could also be bad. Fuel trims are different based on engine temperature, and the tstat being a 180 degree tstat is that way so that the M96 can run at the CORRECT heat based on its sensors and fuel map, metal composition, expansion factors, tolerances, etc...right?? Seems like running at a lower temp (to a point as well) could also be bad, in the best case, potentially just worse fuel economy?
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