Klotz Filter Oil – High-Tack Air Filter Oil for Washable Diesel Air Filters

Klotz Oil

After 40 years working on diesel engines, I’ll tell you this plainly — most “filter problems” are actually oil problems. A washable air filter that’s under-oiled lets fine dust through. One that’s over-oiled kills airflow and coats the intake.

That’s why I use Klotz filter oil.

This oil is engineered specifically for washable air filter media. It has the right tack level to grab fine dirt and hold it without migrating, dripping, or choking airflow. When applied correctly, it lets the filter do its job — stop dirt, maintain airflow, and protect the turbo.

This listing is for a case quantity, intended for fleets, shops, and high-mileage operators who service filters regularly. It keeps your maintenance consistent and eliminates guesswork when filters come off trucks.

Bottom line: a washable filter is only as good as the oil on it. This is the oil I trust to keep engines clean without creating restriction.

Klotz Foam Filter Oil.

• Blocks out moisture, dirt and water
• For waterproof protection
• Improves air flow
• Filters out micron-sized particles
• 15.25 oz. aerosol