PJ1 Fabric Air Filter Oil - Treatment 15oz

PJ1 Fabric Air Filter Oil is a tacky red treatment for gauze-type air filters used on V-twin motorcycles. The dyed formula makes it easy to see filter saturation and signals when cleaning or re-oiling is needed.

Features

• Super tacky formulation for maximum particle capture
• Red dye shows filter saturation at a glance
• Repels water and moisture
• Compatible with all gauze-type air filters
• 15 oz bottle

Specifications

• Brand: PJ1
• Manufacturer Part #: 4-20
• UPC: 023159004200
• Size: 15 oz
• Color: Red
• Weight: 1.26 lbs
• Dimensions: 2.55 in L × 2.5 in W × 9.55 in H

Fitment

For all V-twin motorcycles using gauze-type air filters, including Harley-Davidson and Indian Motorcycle models.

Frequently Asked Questions

How do I apply PJ1 air filter oil?

Spray or apply the oil evenly across both sides of a clean, dry gauze filter. Let it set for 15 minutes before reinstalling.

Why is the oil red?

The red dye lets you see filter saturation easily. When the red fades to pink or tan, it's time to clean and re-oil your filter.

Will this work on paper filters?

No — PJ1 Fabric Air Filter Oil is formulated for gauze-type filters only. Paper filters require a different maintenance approach.

How often should I re-oil my filter?

Inspect at every oil change. Re-oil when the red color has faded or visibly dulled, typically every 15,000–25,000 miles depending on riding conditions.

Does this improve engine performance?

A properly oiled gauze filter improves airflow and engine breathing compared to a dry filter, which can support modest performance gains with other mods.