Most K&N OEM replacement air filters will normally require cleaning and re-oiling every 50,000 miles.
Servicing your K&N Filter is simple; just follow the 4 easy steps below.

Pictures of Dirty and Clean Air Filters

1. APPLY CLEANER Liberally spray K&N Air Filter Cleaner onto both sides of filter and allow to soak for 10 minutes to loosen the dirt. Do not allow cleaner to dry on air filter. 2. RINSE FILTER Rinse off air filter with cool low-pressure water applied to the clean side out in order to flush the dirt out of the filter. Continue to rinse the filter until all traces of cleaner are gone. It may be necessary to repeat steps 1 and 2. 3. DRY FILTER After rinsing, gently shake off excess water and only allow filter to dry naturally. Do not oil until the filter is completely dry. 4. OIL FILTER A.) Squeeze Oil Apply K&N Air Filter Oil evenly along the crown of each pleat. Allow oil to wick for approximately 20 minutes. Touch up any light areas on either side of filter until there is a uniform red color at all areas. B.) Aerosol Oil Spray K&N Air Filter Oil evenly along the crown of each pleat holding nozzle about 3" away. Allow oil to wick for approximately 20 minutes. Touch up any light areas on either side of the filter until there is a uniform red color at all areas. The above process is the only approved procedure for maintaining your K&N Air Filter. K&N Cleaning Accessories Cleaning Instructions for K&N Synthetic Outdoor Equipment and Industrial Air Filters Cleaning Instructions for K&N Heavy Duty Hybrid Air Filters Cleaning Videos Cleaning Video - Cotton Oiled Filters Cleaning Video - Cotton Oiled Filters (Captions) Cleaning Video - Synthetic Outdoor Equipment and Industrial Filters Cleaning Video - Heavy Duty Synthetic Hybrid Air Filters