I believe Mobil1 carries an 85W-90 synthetic gear oil that I bought at a local auto store in the US here. Not sure since you are in Canada, but maybe make a call around. That is what I am using.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k