Update
UPDATE for anyone who stumbles on to this thread: I called Purolator about the filter for Mazda SkyActiv engines and they confirmed that the PL14612 & PL14610 filters completely meet or exceed Mazda's high-flow requirements. They said they will have a engineer email me the exact numbers, will post when I get them.
Also, on the Mazda3revolution forums they posted information that the difference in filter flow is to meet the cold weather in North America/Europe. See the attached letter from Mazda Malaysia...
Looks like the filter spec for SkyActiv is higher than the regular engines, so a filter designed only for Mazda2 may not work well for CX-5 but a CX-5 filter will be fine in a Mazda2. I also found some posts about people using the PL14612 and PL14610 in the SkyActiv engines without any issues. Apparently they weren't compliant with Mazda spec when the SkyActiv engines first came out, but Purolator redesigned their filters to meet Mazda spec and they are now fully compliant. As are Wix, Mobil 1, Fram, NAPA Gold, K&N and most other filters.
But at about $6 from the local dealer, I think it is safe to just stick with the Mazda OEM filter and avoid this confusion.
UPDATE for anyone who stumbles on to this thread: I called Purolator about the filter for Mazda SkyActiv engines and they confirmed that the PL14612 & PL14610 filters completely meet or exceed Mazda's high-flow requirements. They said they will have a engineer email me the exact numbers, will post when I get them.
Also, on the Mazda3revolution forums they posted information that the difference in filter flow is to meet the cold weather in North America/Europe. See the attached letter from Mazda Malaysia...
Looks like the filter spec for SkyActiv is higher than the regular engines, so a filter designed only for Mazda2 may not work well for CX-5 but a CX-5 filter will be fine in a Mazda2. I also found some posts about people using the PL14612 and PL14610 in the SkyActiv engines without any issues. Apparently they weren't compliant with Mazda spec when the SkyActiv engines first came out, but Purolator redesigned their filters to meet Mazda spec and they are now fully compliant. As are Wix, Mobil 1, Fram, NAPA Gold, K&N and most other filters.
But at about $6 from the local dealer, I think it is safe to just stick with the Mazda OEM filter and avoid this confusion.