I don't think the Magnuson-Moss Warranty Act works in Canada ( not 100 % sure) but you have your local consumer protection depends on the province for that matter, and I don't know if they provide same protection or not ? I can say that 15 years ago, and in the province of Quebec, I remember asking once consumer protection if I used Amsoil syn oil with extended drain, and did the oil change myself if the dealer can deny warranty, and they replied only if dealer can prove that this product caused a potential damage , and i needed to keep receipts as proof, or else he can't deny it. So I guess each province has a similar protection law, some maybe better than others, but better check with local consumer protection to be safe.