I emailed Mazda Canada for a second opinion and this is what I got:
I will print a copy of this and keep it for my records. I wonder if this will be enough evidence or proof of any statement made by Mazda CanadaHello Mr. Freire,
Thank you for taking the time to contact us and for allowing us the opportunity to respond.
We do not expect you to perform oil changes on a vehicle stored for 1 season, however, when removing the vehicle from storage, we would recommend an oil change, as fluids to break down over time, as well as kilometers. As such, should warranty require the maintenance records, we will review these records and also take into consideration that the vehicle was stored (as indicated by no change of kilometers between oil changes and date). Further, please note that oil changes are recommended every 8,000 km or 4 months and not 24k. We trust this clarifies our position on the matter. Should you require additional clarification, please call us toll-free at 1-800-263-4680 during regular business hours.
Regards,
Mazda Canada Inc.