I noticed in a few messages around here about people swapping their Thermostats from 190 to 180.
What is the advantage of this?

It usually only applies to the L67 (Supercharged). The engine runs cooler, making it more efficient.

Anyone have the Slant PN for the 180* thermostat for the S2 L67? I haven't been able to find it and all of the parts counter guys only know what the computer tells them (ie. not much).

Would it still help a non SC motor to run cooler?

YES it will.....heat is a killer on a motor,anytime you can reduce head it'* a good thing.

DO IT!!!!!!!

Thank'*
I shall do that to my cars.

You may want to go back to the 195 this winter for a little more heat,
it'* up to you, some people do some don't.

Daman, I know we've had this discussion before, but...

If a thermostat is an on/off switch designed to help the engine warm up quickly(and it is) , could you please explain how, in an engine designed to run at about 210 degrees while operating,
the thermostat that opens at 30 degrees cooler than that affects engine operating temperature?

Bob...with the thermostat being on the upper radiator hose path and this is the exit for coolant from the engine to radiator, the thermostat restricts the flow of coolant keeping the motor up to the temperature of the thermostat. If you remove the thermostat our cars (while moving or fans being on) have a cooling capacity well below 180-195 degrees.

Therefore if your thermostat was removed you should not be able to reach 180 degrees while moving or fans running. Sitting still is a whole other ball game.

^ ^ ^ I agree