Re: 5.7 Hemi Engine Break-In Oil Change
If you're going to change your oil more often than the manual, then certainly you would want to change your oil for the first time sooner than 8k miles!
I'll change mine within 1K miles to Mobil 1, then go 6 months or 8K to satisfy warranty. Keep receipts and box UPC for filter, and write mileage on receipt for oil.
I also plan on magnetic drain plug or filter magnet as well.
All that being said, I think as long as an engine has no internal flaws, as long as you don't flog it when it's cold (oil less than 130F) it will not fail due to oil if you follow the manual.