The Aero is a bit loud. Sounds good, but when I am on the Jakes, it really cackles. When I get close to a town, I try to remember to turn the Jakes off.
The Mountain West Directory shows it as almost 9 miles of 6% followed by 5 miles of 3% grade. I do it without jakes, i just drop the Allison into second and go slow using the brakes as little as possible.