"I am feeling more comfortable every time I get in the car," Van Gisbergen said.
"It is going to be a long year and this is just the start but it had been an encouraging start to the season."
Van Gisbergen was the fastest Holden on the grid during the 48 lap four day sprint around Albert Park.
Winning three out four races and claiming his 7th GP win, Van Gisbergen is now part of an intriguing three way inter-team battle for the championship after joining Triple Eight Race Engineering in an expanded three car stable that sees Craig Lowndes shift to a Caltex entry.
"Shane did a tremendous job over the weekend and won a pure out speed race today,"said V8 legend Mark Skaife.
"He was in a bit of trouble at the start but was able to sneak away at the end. It is shaping up as a real battle between three of the heavyweights at Triple Eight and all these guys will be right in the championship mix.
"I have been very impressed with the way they have rolled out and I didn't expect a performance like this yet. Going from two to three cars is a big commitment and it is a fantastic start.
"I think they are already there (at the top of the field). The have showed they have genuine car speed."
- news.com.au