09-10-2019, 12:39 PM
The design definitely accepts a paper filter inside.
However, it is possible the owner used a stainless steel re-usable oil filter that is simply rinsed (with mineral spirits) and blown dry and put back? My ol' Aprilia had a stainless steel filter cartridge in behind a spin-on cover.
However, it is possible the owner used a stainless steel re-usable oil filter that is simply rinsed (with mineral spirits) and blown dry and put back? My ol' Aprilia had a stainless steel filter cartridge in behind a spin-on cover.

