Hey guys new member here, so my maintenance warranty has just expired for my BMW 2015 F16 X6 35i xDrive. Now I plan on changing the oil myself with LL-01 but I am stuck on which oil to use. Car has a little over 25k miles now and it has been using the normal twinturbo 5w30 BMW oil during dealer visits under warranty. I reside in NYC and my commute to work recently got longer where It's about 70 miles a day 5 days a week (theres alot of local driving rather than freeway). Ive been hearing good reviews about Castrol 0w40 and Liqui Moly Leichtlauf 5w40 and they seemed to be price very reasonably here. I change my Oil about every 5,000 miles. A buddy of mine sold his X5 and actually just gave me a few leftover 5L Juggs of Castrol 0w40 european forumla. Over on the bimmer forums Ive noticed alot of people with older models use Castrol but the newer model members seem to be using oem BMW oil. Should I just stick with oem bmw? Is there a notable difference from Oem than castrol or Liqui? I've heard great things about this forum and would appreciate any suggestions and insight. Thanks!!