Just picked up this LR and want to figure out what oil and OCI I should be using. I believe LR says every 16k miles and the oil spec in the manual is STJLR.51.5122 0w20. Did a quick search on here but couldn't find anything new about it. I did a search for that spec and saw a Ravenol oil that claims to meet it, but was wondering if there was anything else that would work, or if I should step up the grade. Plan to run this one into the ground, no warranty to worry about. Thanks!