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Message: <blockquote data-quote="Capm_Spaulding" data-source="post: 3931501" data-attributes="member: 17977">If you change your oil every 3,000 miles, despite how long the manufacture says you can go, you can run most any brand of oil and it’ll be fine since most oil companies have to hit certain standards in order to sell their products. There’s always stand outs, but big name stores won’t carry the one off brands that don’t meet these requirements. Where it really starts to matter is when you get into the 7500-15000 mile oil changes some manufactures have stated in the manual. The molecules don’t break down in some of the higher priced brands due to the “quality” of the oil additives in them. It’s debatable though when you think about contaminants, burn off, etc etc. but if you go by the book on those high mileage intervals, you better use the best oil you can find and check the level regularly.There’s little objective info with engine oil, most of it is opinions. For me, I run Mobil 1 synthetic in my cars that require synthetic, and conventional in those that call for conventional, and I do it every 3500 miles or so regardless of what the book says I can do.Mobil 1 is a mid to high tier oil, but doesn’t break the bank so I can change it more often than required. Oil is cheap compared to engine components.</blockquote>