– Red Bull motorsport consultant Helmut Marko says that he expects Red Bull to fight for victories later in the season, following a planned power unit upgrade from supplier Renault.Renault has spent only eight engine development tokens so far this season, the fewest of the four manufacturers, leaving it with 24 to play with over the remainder of the campaign.A major upgrade is planned for the Canadian Grand Prix, which Marko reckons will bridge enough of a gap to enable Red Bull challenge at the sharp-end on higher downforce circuits."Looking at Russia: the engine power is super important," Marko told the official Formula 1 website."We saw in qualifying that we had...
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