I recently got a job at a local Napa delivering parts/working the counter. Great people to work for , the manager has been there 35 years, knowledgeable guys. I told him I'd rather buy my oil at Wal Mart due to it being cheaper. He said that Wal Mart can sell Pennzoil, Valvoline, etc for cheaper cause its a lesser quality blend thats whats available in a parts store. I know its complete nonsense and not true, but do you guys think it is possible in some circumstances? I know Wal Mart has great buying power and things like that and also when it comes to applying a price to items.