I respect Banks, but I did not see anything definitive in his videos. Just a lot of talk about working the fluid and flat back covers. What about the difference in temperature between the OEM and the aftermarket covers? That would be easy to test and report on, you don't even have to put lights in the differential. Where's the data? Seems like a lot of hype to me. I appreciate that their cover has a great design and will probably aid in cooling the oil, but they do not make one for the 1500's so I had to get something else. I like the looks of my differential cover and expect it to last a long time. We do a lot to our trucks for aesthetics.