this is true, but then you wind up with one brand of oil with half a jug on the shelf and a different brand of oil that is on sale when you need to change your oil. if you just use one brand, the stuff in the half-empty jug on your shelf always matches the new stuff ...I think its good oil and you should get it if you are in need of oil right away, however, you can get the brand name oils for cheaper with rebates.