Ford star Scott McLaughlin has landed an early blow against his Holden rivals, as he chases a third straight Supercars championship.
Red Bull's Shane van Gisbergen finds himself well back in the standings, after a disastrous end to the season-opening Adelaide 500.
Runner-up during the last two years, Van Gisbergen was on track for a memorable Holden double, as he led Sunday's 78-lap race from pole.
He had to make an extra-late pit stop, because his Commodore was running low on fuel, but it got even worse.
Returning to the track in fourth, van Gisbergen spun out with three laps to go, tumbled to the back of the field and failed to finish.
McLaughlin was able to cruise to his 44th career victory, backing up a second-placed finish in Saturday's first race.
"It's so important to have two good results here, because you don't want to be on the back foot," McLaughlin said.
"It's cruel for Shane, because one bad result for him and he's a fair bit off, but he'll come back.
"I'd rather be ahead than worry about having to claw back."
Immediately after his dramatic win, McLaughlin was looking to next month's Melbourne 400, with four races during the Formula One Grand Prix.
"AGP is going to be another learning curve," he said. "It's going to be very interesting weekend, especially with a hard and soft tyre.
"It's going to be a very mixed-up grid, I'd say."
But it wasn't all doom for Holden, after a dramatic week that saw General Motors reveal plans to retire the famous 'Red Lion' by year's end.
Seven-time champion Jamie Whincup secured an emotional race-one win from pole, holding off McLaughlin's fierce challenge to give the Holden faithful some cheer.
During the round, Whincup confirmed he would continue next year, shutting down talk of his decorated career ending.
Chaz Mostert, who crossed from a Ford to Holden in the off-season, finished second in Sunday's race.
SUPERCARS CHAMPIONSHIP STANDINGS
1. Scott McLaughlin (Ford) 288 points
2. Jamie Whincup (Holden) 261
3. Chaz Mostert (Holden) 234
4. Will Davison (Ford) & Cameron Waters (Ford) 231.
AAP
