Mercedes has delayed the planned introduction of a new engine specification for Canada.
Sebastian Vettel got the jump on world champion Lewis Hamilton as Mercedes blundered their calculations on the Ferrari ace's pit stop under Virtual Safety Car (VSC) conditions. If I'm on the seventh race at a hard circuit on the engine I want to see it through.
Hamilton is looking to match an F1 record held by the great Michael Schumacher at the Circuit Gilles Villeneuve, while in-form Red Bull man Ricciardo has a personal best of his own to equal.
"Naturally I'm still here to win, but if they've got upgrades in their engines, which can be from a tenth to two tenths, Ferrari are particularly very strong on the straights".
"I don't want to think about too far behind [me]", he said. He spent most of the second practice session in the pits waiting for his team to iron out an electrical issue, and managed just 17 laps in the session.
"For me, this is a very exciting race".
"A little bit of the drama or changeable weather conditions we've seen in Canada so many times in the past could offer us some opportunities - it's up to us to take advantage of every possibility".
Romain Grosjean damaged his nose cone when he hit an animal, believed to be a groundhog in the afternoon. Sauber's Marcus Ericsson also had a spin that left him facing the wrong way on the track, but he straightened out and resumed.
Lewis Hamilton's quest for a record-tying seventh Canadian Grand Prix victory will be tougher than he wanted.
Stroll earned his first F1 points at the Canadian Grand Prix past year.
Ferrari's racing division was ridiculed online Tuesday after it tweeted about this weekend's Formula One race in Montreal using an image of downtown Toronto.
Stroll has only four points through the first six races from an eighth-place finish in Azerbaijan.
Walls line much of the track situated on an island in the St. Lawrence Seaway and none are more famous than the "Wall of Champions" situated at the final chicane which has claimed victim to many top drivers over the years.