Earlier this year, I ordered (4) quarts of Brad Penn racing oil off Amazon. They delivered (4) 12-quart cases. The order was processed and shipped through a small speed shop in the midwest (KMJPerformance). This isn't cheap oil so I felt bad about keeping it, so I called the shop and told them about the screw up. They were graciously thankful for bringing it to their attention. I kept the 4 quarts I ordered, and shipped them back the rest with the shipping label they provided.