Be careful with your coolant level. With the widespread slow coolant leaks that are prevalent in the EDs. Coolant related problems ie low coolant & high temps will lead to the demise of more ED engines than any other thing. My prediction. Time will tell. Currently it's bearing failure but by the time the last of the first four years of production are retired I think it will be from this.
The radiator and system can be very low while the degas or overflow tank still has a few inches in the bottom. If you have a slow leak until or that you can't resolve be vigilant in keeping distilled water & coolant around to make sure that the system does not get low.
Low coolant / high temps will lead to killing an expensive & high labor water pump, your radiator, (now available at Sasquatch for less than half of dealer prices) and eventually your head gaskets which become a non cost effective repair on an older 200k plus mile motor.
Want to see see 350 or 500k out of this motor? Take care of your cooling system. Merry Christmas all.