Have a Range Rover (U.S.) with 2.0L turbo 4 cyl., 2016. The factory required oil from 7 years ago is Land Rover spec STJLR.03.5003. Rather than go to the hassle of ordering Euro oil here in the U.S., any reason I can't substitute a readily-available U.S. synthetic oil rated SP/ILSAC GF-6A/GM...