The whole problem is that it either allows flow or stops flow. The thermostat in the car is effectively an on/off switch. Engine gets to hot, switch turns on, water flows. Engine too cold, switches off water doesn't flow. You wiki post said everything that DP has been saying you just focused in on the those 5 words or so.
It is worth a test, but I don't think you will see a difference. The water in our loops will be in the rad for the same total amount of time. It will just see the rad more often with a higher flow rate.
I understand what you are wanting to do, but I don't think it will be possible without a pretty complex loop. I also think when it is all said and done, any benefits seen will not be worth the time put into it.

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