I haven't seen any Pennzoil Platinum 5W-20 in the 5 quart bottles at any Wal-Mart stores lately. It doesn't even look like there's a barcode place on the shelf for it. There is a sparse supply of 5w30 5 qt. bottles and 5W-20 in the 1 qt. bottles. Is this the case for you guys in your local stores? I am considering M1 in the 5 qt. bottle for $3 more if I can't find any PP.