Went to Walmart a couple days ago and could not believe how stocked they were with oil, they even had Ultra 5w/30 which is hard to come by at Walmart these days, Castrol was in quantities never seen before, I thought to myself what are they expecting an oil changing frenzy? This explains why all other Walmarts are short on oil, its all here! Other thing of interest is the Synpower I picked up no longer has the foil seal underneath the cap - just a locking cap with a breakable bead, arggggggg..