I have 5 star as well, and it improves shifting, acceleration, gas mileage. I have 10,000 miles on mine and the engine seems to be getting more and more broke in. It run a lot smoother, not as loud when it shifts way down on the steeper hills. I use tow/haul when I get to steeper hills or I need to brake down better. Tap the brakes a couple times and it slows the rigg down just right moving up to a stop light in heavy traffic. We really like the coach. I only wish it had opposing slides in the living area. We stay all winter in either Arizona or Florida in the coach. Knock on wood, we have only had one leak in the main slide over the dinette. Caulked the slide under the awning, and fixed it. One of the screws wasn't caulked. Wash machine mother board went out, replaced under warranty.
2015 GT 364 Ts
2013 Ford Edge Limited