Red Bull's fuel supplier ExxonMobil is hoping to bring an upgrade to the Singapore GP as the team bids to improve performance on a circuit that suits its car. Red Bull has struggled to compete with Mercedes and Ferrari on outright pace this season, with the outfit feeling its Renault engine has held it back both in terms of power and reliability. But with Singapore one of a handful of tracks that has the low-speed characteristics that will suit Red Bull's car, a fuel upgrade would prove timely. "We are aiming to introduce a new fuel in Singapore," ExxonMobil Global Motorsport Technology Manager David Tsurusaki told Motorsport.com. "We've had that planned since right up until...
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