Normal Engine/trans temps

[redwngr]

More thermostat infor, for your reading pleasure. 

 

Thermostat is not an on/off device.  

 

 

https://www.stant.com/index.php/english/products/consumer-products/thermostats/abcs-thermostats/

 

From the stant link:

 

THERMOSTAT TEMPERATURES
Thermostats have a “rated” temperature such as 180F or 195F
This is the temperature the thermostat will start to open, give or take 3 degrees
The thermostat fully open about 15-20 degrees above its rated temperature
Many thermostats have a “jiggle pin” or “check valve” that allows trapped air in the cooling system to pass through the thermostat and be released from the system. 
If a Stant thermostat does not have a jiggle pin, it will have a "bleed notch” or other method of removing air from the system.