Are your local fuel stations running 'alpine' diesel yet Al? Do they normally in winter? It know it gets pretty cold there in Oberon but as cold as up in the Snowies? We've been getting consistent -6 to -8 temps overnight in Cooma lately and the cars hate starting in the morning, even with the right fuel.
Every time I drive to Cooma I try to use all of my fuel up and then re-fill on the alpine blend when I get there. Sticking kero in the tank along with the diesel makes a huge difference to the gel point if they don't already sell it pre-blended there
Cheers
Chris