My g/f's car needs an oil change and she uses Valvoline MaxLife 5w30 in the engine. A recent trip to the local Walmart auto section shows the Valvoline MaxLife is $18.24 for the 5 qt. container. The online price for the same oil at that particular store is priced at $16.74. How do I go about getting the Valvoline MaxLife at the stores online price? I was going to make a copy of the page downloaded from their site showing the lower priced Valvoline MaxLife at their particular store. Is this the correct way of doing this? Any advice is greatly appreciated.