Whatever FORD recommends for this high performance version 3.5 is what I will use, and I will have the dealer change the oil until the warranty is up, just like the gen 1 , and then I will change the oil and filter myself.
I was doing every 5,000 miles or after every hard run. Excessive, probably, but was peace of mind to know I always had good oil in her. Full synthetic 5W20 Redline oil with a factory Ford filter.