Hypermiling a diesel powered Ranger in Queensland

2010 Australian 2.5L Diesel equipped Ford Ranger ? A not so good 28 mpgUS combined on the ADR/NEDC. With nighttime lows below freezing currently being experienced by over 75 percent of the country, is there anyone up for a swim? How does Mission Beach, Australia at a balmy 86 degrees sound :) Tucked away in far north Queensland, Mission Beach is a gateway to the Great Barrier Reef and Dunk Island, and a stunning destination in itself.