My 'shored' jug was Purchased several months ago at Walmart. They would play hardball and require a receipt which I don't have. Too much trouble for 1 Qt. I have two more 5 qt jugs that 'appear' to be 5 qts... we shall see. I did see a thread about Mobil 1 at Walmart that was mis-labeled. Labeled 5, but only had 4. Will do some surfing and see what I can find. I also learned that I can get a 12 qt wine type box of M1 delivered free for $59. I just don't drive that much anymore so it really doesn't matter. Thanks, Tom