Ok, so I’ve let it sit, filled the radiator to the top, and have checked it multiple times. The coolant never got low. I decided to go with the griffin cross flow Aluminum radiator the core is 22.5 by 19, the radiator is a total of 27.5 inches wide has the twin 1.25 tubes, and it didn’t make much of a difference. However when I checked the coolant I noticed it was brown, and the color I’m using is bright orange. Do you guys drain the blocks out before shipping them?
