Jack: Two trips ago I received my air tabs for my 2016 Winnebago Winnie Drop 1780. Prior to installing these we took two longer trips with the trailer and we averaged 8.1 Mpg over the course of two trips. Since installing the airtabs over the course of two additional trips we have averaged 9.8 MPG. We really haven’t noticed any difference in the swaying of the trailer but since it’s relatively small it didn’t sway much to begin with. But the Huge gain was in the fuel economy.