Originally Posted by Jason Cornelius

If you are going to replace all of that, pick up a gallon of mini coolant, it’s not pre mixed so you will be able to mix up 2 gallons and have plenty for this job, and will be cheaper than picking up 2 gallons of premixed stuff. You can fill it with water and put 15lbs of pressure on the coolant reservoir to check for leaks now, do it dry when you replace everything.