Daniel Ricciardo will avoid a grid penalty for the Canadian Grand Prix after Red Bull installed an old MGU-K unit; meanwhile all Renault-powered cars have taken on a new engine for this weekend's race.
It was believed Ricciardo would take a penalty after chief designer Adrian Newey said it was a certainty as the MGU-K used in Monaco, which failed, was beyond repair, but the Australian has gone back to an old unit used at the Chinese GP and will therefore avoid a grid drop.
Christian Horner said there was no immediate concern over re-using an older unit and was the team's only option to avoid a penalty.
"No more worried than normal to be honest," he told Sky Sports F1. "It's done a few events and a bit of mileage. It's his first unit that's gone back in the car, he's got no others available. Hopefully he'll be alright with it."
Ricciardo, as well as the five other Renault-powered drivers, has received an upgraded Internal Combustion Engine and MGU-H for this race which is expected to deliver a 30hp gain. All but Fernando Alonso have taken a new Turbo, whilst Max Verstappen, Carlos Sainz and Nico Hulkenberg have taken new Control Electronics.
Sebastian Vettel has received Ferrari's latest upgrade, whilst Kimi Raikkonen will have to wait until later in the season after he required an earlier change in Spain, which was of the original spec introduced at the beginning of the year.
Ferrari's customer teams, Haas and Sauber, took the upgrade in Monaco.
Meanwhile the two Toro Rosso cars have taken Honda's latest upgrade. Mercedes chose to delay its update package until the French GP due to a 'quality issue'.
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