YES. I have to run a thermostat because if I don’t I can’t get the engine over 140.
If it was a drag car I wouldn’t give a **** but I drive it on the street and need a defrost.
If the cooling system actually works the engine should never see higher than thermostat opening except at traffic lights on 100 plus degree days.
And I refuse to use a “restrictor” because all that does is make the engine harder to warm up.
It wastes fuel, kills rings and other kinds of bad ****