My son has a 2018 CX5 turbo. He went to a Mazda dealer recently and paid 13.00 for the mexican made "value" filter. I went to another dealer and spent 12.00, but fortunately got a regular replacement filter (made in Thailand). Last Feb. I paid 8.00 at the same dealer. None of the major aftermarket suppliers (wix, fram, etc) has introduced a turbo specific filter) and the turbo motor has been sold for at least four years now. They all spec the NA motor filter for the turbo motor. Has anyone discovered a difference between the the Mazda NA filter and the turbo filter yet? Apparently the aftermarket manufacturers don't think there is a difference. I have to assume the aftermarket would not be suggesting a filter that would not meet OEM specs or be detrimental to the motor. They naturally represent them as being equivalent or better than the stock filter. Has anyone used aftermarket filters without issues?