Just went to NAPA looking for 5w 50 and was pleasantly surprised when Castrol Edge Full Synthetic came to $59.90 for 10 quarts ($9.69 regular price). If you have a Active Duty, Guard or Retired ID you should be good to go. I cleaned out two stores of 5 quarts each then ordered another 10 quarts at the same price just in case its just for the weekend or a glitch or something guy at the counter said he never saw that amount of a discount before...exactly the same at two different locations in Virginia $29.95 with tax for 5 qts.