Paul Dumbrell put Jamie Whincup’s Red Bull Holden atop the order in co-driver practice at the Vodafone Gold Coast 600.
Dumbrell showed the way for almost the entire 30 minutes, setting his eventual best of 1:11.1445s with seven minutes remaining.
That propelled the #88 Commodore 0.4732 seconds clear of second-placed Steve Owen before others made late flyers.
The shuffle ended with Richie Stanaway second ahead of Tony D’Alberto, Chris Pither, Dean Canto and Owen.
Stanway said he felt comfortable behind the wheel of the Monster Ford, but is wary of predicted rain changing the game tomorrow.
“The car is feeling pretty good. I didn’t have the cleanest run in the first session, the car was quite heavy on fuel and we didn’t quite have that matched with the tyre life,” he said.
“We put some reasonable tyres on in that session and the car was feeling good, but I’m not sure how relevant that’ll be if the weather mixes it up a bit.
“At the moment we’ve got quite a good car over one lap but we’ll have a look more at what we’ll need if it’s a dry race.”
Matt Campbell jumped from 17th to seventh in the final minutes – the Red Bull Holden sporting superficial damage from an earlier brush with the Turn 3 tyre barrier.
Jack Le Brocq was the top Nissan runner in eighth ahead of James Golding and Alex Premat, who chalked up plenty of kerb strikes as he found the limits in Scott McLaughlin’s Ford.
Just over two seconds covered the field, with Todd Hazelwood – making his first Supercars start on the Gold Coast – rounding out the 26 cars.
The day’s third and final practice session will get underway at 1655 local time.