The last Practice session of the day iscomplete, with Will Davison topping the session at the Chill Perth 360.
The Championship leader jumped to the topwith around five minutes to go and led Jamie Whincup (who was fastest in P2),Fabian Coulthard, Mark Winterbottom and Craig Lowndes. Davison dialed a 56.2211secat the 2.42km Barbagallo Raceway.
Another Practice session will followtomorrow morning, prior to Qualifying and the 60/60 Super Sprint race.
The format, which was last seen inTasmania, runs with two halves and a rolling double file restart to kick of thesecond half.