Your S&B filter is designed to protect your engine and maintain strong airflow, but its service interval depends on driving conditions and filter type. This guide explains when to clean, when to replace, and how different environments affect maintenance.

Oiled (Cotton) Filters — Cleaning Intervals

Oiled cotton filters are fully reusable and require periodic cleaning and re-oiling. Service frequency depends heavily on dust exposure.

• Inspect every 6,000 miles or every oil change.
• Clean & re-oil every 12,000 miles (standard use).
• If debris reaches the height of the wire mesh, clean sooner.

Do NOT use compressed air on oiled filters — it can damage the cotton media and reduce filtration efficiency.

Dry (Extendable) Filters — Cleaning & Replacement Intervals

Dry filters are maintenance-friendly but eventually require replacement. They can be blown out with compressed air to extend their life.

• Inspect every 5,000 miles.
• Blow out debris from the outside → in, then inside → out.
• Replace every 15,000–30,000 miles, depending on dust levels.

Dry filters should never be washed with water or oiled.

How to Blow Out a Dry Filter

1. Hold the air nozzle at least 6 inches away.
2. Move the air constantly—avoid concentrating in one spot.
3. Blow debris off the outside surface first, then blow from the inside.

Watch: How to Extend the Life of Your Dry Filter

How Driving Conditions Affect Service Intervals

• Off-road / desert: clean dramatically more often.
• Snow / rain: filters may load slower but still require inspection.
• Towing / tuned engines: airflow demand increases, requiring earlier service.
• Urban/highway: longest service intervals.

Using a Filter Wrap Reduces Maintenance

Filter wraps help block sand, bugs, and larger debris before it reaches the media. They extend the life of both dry and oiled filters — especially in dusty terrain.

Frequently Asked Questions