But this year it's Sergey Sirotkin who is the rookie taking part in his first Canadian Grand Prix.
"This is a power circuit, so it was our target, and it definitely would have been helpful", said Hamilton.
Mercedes' decision affects all of its teams and drivers, so in addition to factory drivers Lewis Hamilton and Valtteri Bottas, Force India's Sergio Perez and Esteban Ocon and Williams' Lance Stroll and Sergey Sirotkin will also stick with the engines they have been using since the start of the season.
Another went even further, putting the Ferrari slogan Forza Ferrari alongside a GIF of a Mercedes Benz vehicle ornament.
Lewis Hamilton will be hoping he can get back to winning ways in Canada after a third-place finish behind Daniel Ricciardo and rival Sebastian Vettel in Monaco allowed the latter to close the gap to 14 points at the top of the Formula One drivers' standings. Naturally it's degraded, you lose horsepower over races.More news: Del Potro Can Trouble Nadal During Semi-Final Clash, Wilander Says
"Each driver has their strengths and weaknesses and there are 21 circuits it is impossible to be flawless at every one".
But Hamilton ruled out reducing practice running to preserve the engines, saying "I always watch mileage anyway". Gilles Villeneuve, the Berthierville, Que., native the track is named for, won the 1978 race.
The world champions said "quality issues" meant their second-generation 2018 power-unit would be used at the subsequent race in France instead.
And it will feature two Canadians on track - second-year Williams pilot Lance Stroll of Montreal and Nicolas Latifi of Toronto, who will drive a Force India auto in the Friday practice only.
"It is of course Lance's home race, and also where he scored his first Formula 1 points previous year in his rookie season, so it holds good memories". It will be tough to repeat his ninth place finish with the Williams team struggling to get the vehicle up to pace this season.More news: Kevin Durant named NBA Finals MVP
"We still have work to do", Vettel said.
"I can't wait to get to Canada as it is my favourite race of the year", commented Stroll, who was himself born in Montreal.
"Therefore at this point we know that we are not yet where we want to be, because we want to be fastest".
"But it's been very positive in my view". It's a long year. "Hopefully, we can turn things around and pick up more points".More news: Rescue work at Guatemala volcano interrupted, death toll hits 100