Breaking-In a new modern vehicle?

I realize your operators manual says nothing about the subject but here's my humble view. It's best to vary your speeds. No full throttle starts and no ping (2-3 or 3-4) down shifts for at least 500 miles. It's OK to drive 65 but cut it back to 60 - 65 every few minutes. I'd try not to use the brakes for hard stops during this period. It's totally up to you for the next suggestion. Change the engine oil @ 2,000 miles and think seriously about using a 100% synthetic motor oil at this time, particularly if you have a 4 cyl. motor. Comparing Texas crude or hard to find Pennsylvania's two brands, Gulf and Brad Penn (same company owns both). Synthetic flows at 50 - 60 below 0 degrees Fahrenheit and flashes @ 460 - 475 degrees. Depending on viscosity choice. Some new cars call for 5w-20 and most 5w-30. Every brand of oil today has paper trails and you can easily compare charts.