- Aug 7, 2012
- Reaction score
I pulled the K&N air filter out of my GL1800 today. I held it up to my eye and could see pretty well looking through it. Even the iPhone took a fairly good picture of my garage window looking through the filter. Yes, the photos of the window we’re taken through the filter with the phone up against it. There are very big holes in the fabric for light to pass through. It’s no wonder these things flow more air, and dirt, and they last a long time. The K&N went in the trash and I installed an OEM air filter. No more K&Ns for me. The filter in this picture was in service 15,000 miles since last cleaned and oiled. I’d guess most of the dirt went through the engine, since it wasn’t in the filter.