Kimmy,
We have TS AWD Territory and it's pulling a 2015 17.56-1 OB, generally have 3 bikes on the roof of the car, plus all the bits and pieces we need and the wife thinks we need. Yes, we use WDH as required by Ford typically drive around 90-95kph, typically don't throw the transmission into performance mode. And we average around the 15lts per 100km, the only time I've noticed the slight unhappiness in the Territory was pulling the van fully loaded up the hill from Marysville to the Big River camp area in the East of Melbourne. It's a tight twisty incredibly hilly road with lots of tight corners where you're travelling around 15-30-kph, the engine had no trouble pulling it just the drive train didn't like the constant torque load out of the corners.