What brand do you guys run for motor oil? I was price shopping today and it looks like 7 quarts of Mobile 1 is going to run me right around $33. OR, I could go with a store brand for around $22. The store brand is Meijer brand and the additives and quality would appear to be the same as the Mobile 1. Is Mobil 1 worth the price difference do you say? Both brand were a full synthetic so that's why I'm wondering if it's really worth it to pay nearly $50 for all the MATERIAL for an oil change VS maybe $30 or so.