Looking at virgin oil report on pqia web site, it seems like Peak is a good, robust oil. If I needed oil for my next oil change, I'd buy a jug and throw away that Driveworks oil filter. However, I don't think the advance auto sale is good enough to stash more of Peak oil than I need at this moment considering I can buy something like a gallon of Quaker State Defy or PYB at Walmart for $15-17, any time. The oil that's worth stashing is Valvoline's Nextgen and Maxlife Nextgen since most parts stores are offering main-in rebates on it right now. The AAP promotion is the best. No need for envelopes or paper forms. Simply save receipts and apply online for the rebate. I am getting ready to pick up my 3rd FAR gallon of NextGen from them.