"We expect a number of teams to take their scheduled second Power Units this weekend, including all the Mercedes-powered cars", Wolff said, as quoted on Sky Sports.
"So all Mercedes-powered cars will be running PU1 again this weekend, too, before the new units are available in France". As with Schumacher before him, he looks to have mastered heavy braking and acceleration on the circuit's long straightaways that lead into tight chicanes.
Asked about Ferrari's engine upgrade for Canada, which debuted in the back of the Haas and Sauber in Monaco, Vettel added: "It's always been the plan, so let's see". This was because, new parts were required to fix an engine problem that the Australian suffered in Monaco.
"Following Lewis's pit stop, we believed that we had the scenarios of both the safety vehicle and the virtual safety auto covered, so that Sebastian could not pit and come out ahead of Lewis on track".
The video, published on Tuesday, June 5, pages Scuderia Ferrari, says: "We are ready to Montreal".
Stroll also took time to cast his mind back to 2017, commenting: "I had a great race here, first points in Formula 1 and I'm looking forward to this year".
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Ferrari are also expected to use an upgraded engine for all their teams, but this has not yet been officially confirmed.
The big loser could well be McLaren who have been the slowest in a straight line throughout this year and are unlikely to make up that deficit in other areas.
In the morning session, Williams driver Sergey Sirotkin spun and hit a wall, but was able to continue.
Stroll earned his first F1 points at the Canadian Grand Prix previous year.
They said that the engine was not doing more miles than intended.
It will be a memorable weekend also for two-time champion Fernando Alonso, who is entered for his 300th Grand Prix and, potentially, his 298th start.