Will draining trough the plastic valve get rid of all coolant or do I have to disconnect other hoses.
When adding new coolant do you mix it before or just add coolant and then distilled water to the holding tank (reservoir)
Appreciate any guidance

Got one from Amazon for $67, thanks for the recommendation.

The first thing was to check all the connections again. And of course, I found one that wasn't connected. After plugging in and clearing codes everything is fine. Operator error. I apologize for wasting the time of all 70 members reading this thread. The only lesson one could learn is to take pictur...