McLaughlin ran inexperienced tyres fairly early within the session, the benchmark time – a 1m15.201s – coming simply eight minutes in to the half-hour hit-out.
He then went for a second qualifying simulation later within the session, however regardless of a purple first sector was unable to match his earlier time.
“That is one factor we have introduced on since Townsville,” stated McLaughlin about operating two units of greens. “We have to get comfy with our qualifying, figuring out that we have to qualify on the entrance and that is half our job executed.
“Total I am actually glad, the automobile was actually balanced. I am actually having fun with the brand new circuit, the West circuit is pleasant. It is a new problem.”
Mostert ended up second by simply 0.09s, his time additionally coming earlier within the session after he ran broad on the final nook on his ultimate qualifying sim.
Fabian Coulthard was third quickest adopted by Bryce Fullwood, Anton De Pasquale and Nick Percat.
It was a quiet displaying from the Triple Eight Holdens, in the meantime, title contender Whincup the very best of the Pink Bull automobiles down in eighth.
Shane van Gisbergen was simply 17th quickest, a lock-up late within the session proving pricey.