K&n type filter oil

[bj-666]

well i i recently installed a cone filter in my heep to make room for a second battery just wondering what type of oil is used to oil the filters

[John90XJ]

I use K&N filter oil, comes separately or in a package with the spray cleaner.

Other brands are likely available as well. Try your parts store or a motorcycle/quad shop as an alternative.

[wrong1]

I use 10-40W. I have so much blowby that I just add a quart to the valve cover and watch it go out the CCV tube into the filter.