Red Bull and Honda have been forced to change Max Verstappen's engine after it began leaking oil at the end of the first Friday practice session. The spec 1 engine had been used for the first three races and was refitted after the Azerbaijan Grand Prix where the team had run the spec 2 model. They had planned the refit the latter tonight but were forced to do  so earlier due to the oil leak that took place at the end of FP1. 'We've now changed the power unit on Max's car following the oil leak that occurred during FP1,' said Honda F1 boss Toyoharu Tanabe. 'Both cars started FP1 with Spec 1 PUs with a plan of changing them for Spec 2 tonight, therefore Max's PU change has happened just...
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