I noticed today that I only have the dirt retention additive. Where can I get some of the cleaning additive? Thanks a lot.

 

I just use hot soapy water. Massage it into the foam and rinse well. Repeat until the rinse water is clean. Then dry thoroughly and re-oil.

 

I've heard of people using the wrong type of fluid and ruining K%N Filters. Is that because they're cotton gauze, and not foam like the pipercross? The code number for the additive is C9000. Do they have generic cleaning fluid at an autoparts store?

 

Bump.

 

Foam and cotton filters require different types of oils and cleaners. For foam, go to a motorcycle shop and get a Uni Filter service kit.