I don't know about going to 4th or 5th. I use engine braking a lot in place of brake braking. I use 3rd a lot going downhill, or even 2nd. Keep off the brakes and use just enough gas to keep going.

The best tip of all ? Move to Phoenix.

Bless our servicemen & women overseas. L.Cpl Ian Malone, 1st Battalion Irish Guards, R.I.P.