I am prety sure the answer is yes, but I want to be sure. I just got a K&N high flow airbox adaptor and filter with outerwear. Do I still have to use filter oil on the filter, even though it is in the airbox and has the outerwear? I ride primarily in the dunes (if that matters).

I would guess yes..

However, (Not to pizz on any sponsers) I think the paper type filters work better..

And no, not Pep Boys filters..

yup, use the K&N filter oil, then put the outerwears over it.

Thanks guys.

not too much. get a can of the aerosol K&N oil. WAY better than the crappy drip bottles the give you.

Oil is how the filter works, no oil