[Tapani]

196 F engine outlet is fine. I bet the thermostat is not fully open if the airflow across the radiator is sufficient. There's a lot of margin for more heat rejection even with the OEM flimsy looking rad.

A temp sensor in the thermostat inlet housing would be nice :-).

The Subaru cooling (or any other system with the thermostat in the engine inlet and one based on high flow rate) can not be approached like the more traditional systems.

/T