They are not created equal as well. The store brand I started with has a floating rivet and hole to help bleed the air, seemed good but it restricted the flow. Changed to a Milodon high flow 185 and there was a substantial difference when the components were re-shot with the laser. Head and upper block temps dropped drastically. My radiator was working fine according to the laser with about a 60 to 70 degree drop from top to bottom. Problem seemed to be nothing but good flow. My temp difference on the radiator are lower now but over all the temps are around 190ish!
