The Kiwis diced at the front in Race Three, while Mostert and Wood fail to finish after incident.
Shane van Gisbergen led from start to finish, though a number of laps were under safety car, with carnage on the first lap.
The top points scorer throughout the MSS Security Challenge, van Gisbergen ran ahead of Craig Lowndes and fellow countryman Fabian Coulthard, while chaos ensued behind.
Contact between Chaz Mostert and Garth Tander spun the Pepsi Max Crew Falcon at turn seven, and Dale Wood in his Team ADVAM/GB BJR Commodore could not avoid ploughing into the car.
Wood’s team is not sure whether the car will be out tomorrow, but have just finished building Jason Bright’s new chassis for this event.
Bright had dramas of his own – after a short battle with Tander the #8 was in the pit lane with the bonnet up.
There were ramifications for well-placed Will Davison, who dropped from the top 10 after the restart into the pits after a tyre puncture.
Drops of rain fell in the closing stages, but it wasn’t enough to stop the Kiwis from flying. A rare mistake from Lowndes saw Coulthard move up to second, and McLaughlin and his Volvo ended the day fourth.
Tander, Michael Caruso (Nissan), Jamie Whincup, Mark Winterbottom, David Reynolds and Todd Kelly completed the top 10.