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 one session earlier than planned.
“Pierre continues to use the spec 1 PU for FP2 and his PU will be switched to Spec 2 tonight, as per the original plan. Further investigation on the cause of the oil leak will now be carried out.”
Verstappen had a more drama-free FP2 session following Friday morning’s, finishing P5 and seven tenths behind the leading Mercedes driver Valtteri Bottas.
“We had an oil leak in the first free practice session,” Verstappen said after FP2.
“These things happen. We lost a bit of time that affects us. We clearly have work to do. Tonight we’ll analyse all the new parts, which will help us tomorrow. But the updates are working.”