BTW towing the boat (tandem trailer, about 2 tonnes total) with a 3.6L VE Commodore gets about 16L/100km on the winding, hilly Nelson-Havelock route at a guess, doing 90km/h on the straights. It feels pretty safe and solid to me, no yaw or pitch at all. Never had to stop in a hurry though, hope I never do... My brother prefers towing the boat with his work Hilux 3.0D twin cab manual ute though, even though it's much lower powered than the Commodore it's got all that low-down torque.