I've not used one before on the main coolant system of a car, but I have used them in aftermarket A2W Supercharger Aftercoolers. They are a key element in achieving maximum efficiency in them. I've been surprised by the supercharger manufacturers for this chassis overlooking that detail.
It would definitely be interesting see how incorporating one might affect the stability of temps in our car.
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VeloxEric any thoughts on this?