The AEM 28-20480 DryFlow is a reusable, drop-in panel filter for the factory airbox. The manufacturer's product page lists it for the Mazda 3 SKYACTIV 2.0L from 2012 to 2014, and its non-woven synthetic media is oil-free and washable. Its 10.75 in x 7.125 in x 1.625 in footprint is meant to match the stock panel element, so the swap does not require airbox modifications.
Against a disposable paper panel, the case for this filter is long-term value. The manufacturer says the media captures up to 99% of contaminants and holds airflow in dusty, racing conditions, and it carries a limited lifetime warranty that the manufacturer says will not void the vehicle warranty. For Mazda 3 applications, the manufacturer's own application pages suggest up to 50,000 miles between cleanings, depending on driving conditions, which spreads the cost well past a single replacement cycle. Search terms this part answers include Mazda 3 2.0L SKYACTIV air filter upgrade, 28-20480 washable drop-in filter, and reusable Dryflow panel element.
The manufacturer's product page lists the Mazda 3 SKYACTIV 2.0L for 2012 through 2014. Wider year ranges have not been confirmed by the manufacturer, so check your VIN with the manufacturer before ordering.
No oil is required. The manufacturer describes the element as washable and reusable, and recommends cleaning with its filter cleaner (part 21-110) or a mild multipurpose cleaner, then allowing it to dry completely before reinstalling.
The manufacturer states that installing this filter will not void the vehicle warranty.
The manufacturer rates the install as easy and estimates about 20 minutes with a screwdriver. Remove the factory panel from the airbox, seat the AEM element in its place, and close the airbox. Clean the filter only with a mild cleaner, never with oil, and make sure it is fully dry before reinstalling so no moisture reaches the intake. Clean the element again based on your driving conditions, since cleaning intervals vary.