Mark Winterbottom started 10th, with his Championship rival Craig Lowndes on ARMOR ALL Pole Position. Frosty fired, a soft tyre strategy seeing him race at the front.
There was uncertainty of whether he could hold on late in the race, with speedy Kiwi Shane van Gisbergen powering on, past Jamie Whincup in third to latch on to the back of the Pepsi Max Falcon.
The mixed tyres made it an intense strategic battle over 69 laps, with many of the field starting on Dunlop soft tyres, though the Red Bulls filling the first two grid spots did not.
An early safety car for Robert Dahlgren, whose Volvo suffered from a sticking throttle, played into their hands and raised question marks of whether those who started on softs had lost their advantage.
But by just 0.534sec, Ford's Winterbottom brought it home, showed us why he's the Championship leader, and cemented another 200km race win for FPR after teammate Chaz Mostert won the Sunday race in Perth, and Frosty the two prior in New Zealand and Winton.
"It's an incredible race - it's good to have those different formats, tyres with some on hards and some on softs," Winterbottom said.
"Shane was coming, but it's awesome - I'm so happy we won. It's good to bounce back from yesterday."
Van Gisbergen felt Frosty was struggling with grip, but said once he passed Whincup for third he only had one more lap in his tyres to pass for the win.
"I gave it everything," the VIP Petfoods TEKNO Autosports driver said.
Whincup pulled aside and let van Gisbergen through in the closing laps - he said he wanted to see a battle, and he didn't have enough life in his tyres to pressure Frosty.
"Shane was much quicker, our tyres were well and truly gone," Whincup said.
"I wanted to see a race, to be honest. I knew I was going to challenge Frosty, thought I'd let Gizzy through and see what he could do. I was a spectator like everyone else."
Two of the Championship's top four had horror results, with Lowndes finishing 17th and Fabian Coulthard 22 after a strategic error from Lockwood Racing.
Completing the top 10 in the race were David Reynolds, Holden Racing Team duo James Courtney and Garth Tander, Nissan's James Moffat, Volvo's Scott McLaughlin, Rick Kelly and Russell Ingall - on an alternate strategy.
Others to note include Erebus' Lee Holdsworth in 12, Chaz Mostert 15 and Jason Bright 20th.