- Jul 3, 2009
I daily a 2017 Mazda 3 iSport hatchback. It is time for another oil change and I brain farted on what weight oil so I pulled out the owners manual (online) and according to it I should use 0W20 in the USA, Canada and Puerto Rico but outside of those areas I should use 5W30. I can only imagine that is due to fuel economy standards. Any other thoughts?