Why would a factory trained tech be changing oil for minimum wage?
On a new engine ( I've built many ) I change the oil at 500 mi and have the oil analyzed. If the aluminum or iron ratings are higher than 200 ppm I change the oil again at 1000 mi and have the oil reanalyzed to very the al and fe levels have dropped to a more acceptable range <100 ppm. After I am happy with the results I resume my 3000 mi regular maintenance schedule.
'12 JK, 3.6/NSG370/NV241/D30/D44, 2" Lift, 32" KM2's, 4.10's
'01 WJ, 4.7/45RFE/NV247/D30/D44A, 2" Lift, 32" KM2's, 3.73's
'72 CJ5, AMC 304/T-15/D20/D30/D44 2" Lift, 31" KM2's, 4.11's
'48 CJ2a currently under construction. (Wedding present)