I'm not trying to start a crazy oil thread, but I am on the road and I need to change oil. I have a filter but I need some oil. In the past I used BMW oil, then I switched to buying oil from beemerboneyard. I have a 2012 GSA and I need to know which oil I can buy from a Wally World or an auto parts store. I know nothing about oil so I am trying to get a recommendation to a brand that will be safe to use. Thanks.