How often should I be cleaning my filter?
Pusher recommends you check it out every 5-6,000 miles; they find it easiest to just check on it at the same time they perform oil changes. Take it out, tap off any loose debris, dirt, bugs – then you can use your best judgement on whether or not it’s time for a full wash. Drivers in dustier, off-road conditions will need to wash more often than city drivers. Click to read more: How to Clean Your Pusher Air Filter
Should I be oiling my filter? Is this filter pre-oiled?
Pusher filters are made with media that can be oiled, but they are not pre-oiled. Pusher doesn't recommend oiling unless you are in a dusty environment and need the extra support of the oil to catch the really fine particles. If you do oil, make sure to use a cleaning and oil kit from a reputable brand, and take care to follow application instructions carefully to prevent over-oiling.
Do I need a pre-filter, or filter sock?
Pre-filters are great at keeping large debris like bugs, grass, rocks, etc, out of your pleats, which makes maintenance even easier. Pushers pre-filter is also semi-hydrophobic, so when water hits it a good amount of that water beads and rolls off, keeping your filter drier which is best for longevity and performance. The airflow impendence of the pre-filter is negligible.
How long will these filters last, how many washes?
It really depends on your environment, how often you clean, and whether or not you use a pre-filter; if your filter media is beginning to get frayed or wrinkled you might want to consider swapping in a new filter. With average use, this is normally after 2-3 years.