That display of emotion confirmed Hamilton's unchallenged supremacy in Montreal, but he faces a much more hard challenge from rivals this weekend as the leading teams take their scheduled revised second engines of the season.
That was in the wake of Red Bull's pace at the Monaco Grand Prix with Daniel Ricciardo having joined Hamilton and Ferrari's Sebastian Vettel in the title race.
Hamilton has a superb record in Montreal and victory on Sunday would see him match Michael Schumacher's haul of seven wins at the Circuit Gilles Villeneuve.
Mercedes said on Wednesday that they would delay the introduction of a power unit upgrade until after this weekend's race due to a quality issue while Ferrari and Renault, who supply Red Bull, will deliver new engines.
"It's now the seventh race with the same engine", said Hamilton.
While Ferrari and Red Bull will have fresh engines, Mercedes will go with the same power unit. "If we're in the 7-to-8,000 kilometres [range], it would have definitely lost performance, and on a power circuit it would be magnified".
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"I am very proud of the work he has done for us and I hope that we will soon be able to give him a auto that will allow him to show his full potential". That is my only concern.
"We need to make sure we get the most from all the tyre compounds, including the "hyper-soft", if we want to come out on top".
Since then Hamilton has added five more wins including a hat-trick of Mercedes triumphs in 2015, 2016 and 2017 to move within reach of becoming the first man to secure four straight pole positions - he converted pole in each of those years - and four consecutive wins.
The Briton can also beat the record he now shares with Schumacher of six poles in Montreal.
It will be a big weekend at the track, which is celebrating the 40th anniversary of the event's move to the island circuit across from downtown Montreal.
"Each driver has their strengths and weaknesses and there are 21 circuits it is impossible to be flawless at every one". I've always been very aggressive on curving and being able to get close up to the wall and this is a place where you really need to be able to utilize that and have confidence.