Blueprint 408 cooling system questions.

Moparmadness408 said
Okay I’m using the zerex American vehicle formula, it’s orange and it’s pre mixed 50/50. Will a shroud help at higher speeds? I took a heat gun to it, and it reads 203 ish at the thermostat. I filled the radiator up all the Way to the top, and turned on the heater and let it run The gauge does register 180 when I feel the thermostat open.

Have you topped off the radiator after it has cooled all the way down? Several times?
Tried leaving the radiator cap off (from cold) and seeing it the t-stat opens properly and you can see the fluid moving? And top it off if low.
Note, you do have to get the cap on before it hits boiling....so it doesnt geyser.