Put a 180 instead of a 195 truck seems to like so does the transmission! Its usually 100 degrees here ien the summer truck runs about 190 with the ac on. What do you think is a 180 too cold

 

The electronic engine controls are calibrated for a 192. You may have issues when the weather gets cold.

 

It runs great with the 180 but ill probably switch over to a 190 in the winter I was running about 210 with a 195 and that's too hot for me. But should be fine when I switch it to a dual core rad but for now its looking good

 

210 is actually where it's supposed to run for best efficiency. With 50/50 coolant mix and 15 psi pressure, the boiling point is about 265.