coolant recovery

Jeep Wrangler 2018 JLU 2.0 Turbo So my issue has been that my jeep would overheat when I’m idling or driving constantly at a low speed. My temporary fix was to rev my RPMs 3k + for a few secs and the temperature would go back down. I changed out all 4 spark plugs, slot 1 and 4 Ignition coils...

2018 Jeep Wrangler JLU Sport S Turbo 2.0 I’m trying to understand if it’s necessary to have Coolant in the Coolant Recovery Bottle (Mopar Part # 68364312AC) either Minimum/Max level or completely dry. There doesn’t seem to have a straight forward answer. If “yes” that it’s necessary and required...