x2..  why would putting a hotter thermostat cool the engine???

just curious?

Because it allows the coolant in the radiator to cool longer. That is why a 160 degree thermostat won't make your engine run cooler. Factory spec is 195 anyway.

And, this was doing the same thing before the 195 was put in.  Regardless of what thermostat is in it, its not the problem.