Generally you just drive it around and try to keep the engine speeds varied for the first 500 miles. Just avoid cruising at idle speeds and you should be OK. After 500 miles, change oil and it should be good to go.
Or not... These 3.8s are rather durable and a good filter should get you to 5000 miles easy. Thats the Ford recommended interval.. None of my 3 SCs have fouled rings and all have over 150,000 with 5000 mile oil changes with regular 10w30.