I've typically bought the 5 quart jugs at Wal-mart and an Extended Guard oil filter. Last time it was Mobil 1 AFE. I've kept on hearing from the guys here that Autozone, O'Reilly's, Advanced Auto, Pep Boys, etc occasionally run incredible oil deals. Man, that ad from Advanced Auto listed above has me salivating. I'm switching for my next oil change to Castrol Edge and the Bosch filter for $29.99. Wal-Mart may have permanently lost my business. It's everyday prices are cheaper, however, when those auto companies run their specials, no comparison!