Does This Debunk the "Coolant Can Flow Through the Radiator Too Fast" Idea???

Newbomb Turk said
The thermostat controls the MINIMUM OPERATING TEMPERATURE IF TGE ENGINE.

That’s not a ******* guess or an assumption. It’s a fact. You even agree with it and then tell me I’m guessing. That tell me you don’t read what I write.

So if engine temps are higher than the rated temperature of the thermostat the cooling system is at fault.

The first sentence there is true. The last sentence is not. If your engine runs at 195-200* and you decide to throw a 160* thermostat in, your cooling system is not at fault because it doesn't stay at 160*.