Prodrive Racing Australia's Chaz Mostert has continued his rich vein of V8 Supercars qualifying form with a brace of pole positions at the Winton Motor Speedway.

The Pepsi Max Crew driver took the Saturday honours in both sessions as the Ford Falcon FG X machine proved once again to be the class of the V8 Supercars field.

Neither of the two sessions managed to meander into a desirable flow as dusty track conditions gave the field a headache as the cars scrambled for grip around the three kilometre circuit.

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Volvo's Scott McLaughlin was the main casualty to trip up over the dusty surface as the Polestar driver brought out the red flag during the session.

That meant the entire field only had time for one representative run at the end. It was the Nissan Altima's that had looked to have figured out the conditions best after Todd and Rick Kelly both leapt to the top.

But Mostert quickly demoted the Nissan pairing as Michael Caruso followed the Ford onto the front row for race one.

David Reynolds and Mark Winterbottom upheld the Ford stranglehold after creating an all Prodrive prepared second row in third and fourth as the Kelly brothers dropped to fifth and seventh by session end.

Freightliner Racing's Fabian Coulthard sandwiched the two Nissan's in sixth while Red Bull Racing Australia's Jamie Whincup set a time good enough for eighth. The low grip conditions even caught the Triple Eight Holden out as the defending six-time champion suffered a brief off-track excursion during the session.

Shane Van Gisbergen and Jason Bright completed the top-ten grid order for race.

Qualifying for race - minus a red flag - produced much of the same story, though, this time, Winterbottom and Reynolds made it a Ford 1-2-3.

Two Nissan's managed to make the top-ten cut this around as Rick Kelly took over the mantle in fourth while Caruso dropped to eighth.

Whincup went two positions better to qualify in sixth ahead of Tekno Autosports Van Gisbergen in seventh.

GRM's McLaughlin recovered from his Q1 mistake and qualified his Volvo S60 into ninth position.