Did a web search and didnt find any info for XLs. I'm starting to prep our bikes to do the TLH this year and this has probably never been done on this bike :huh. The shock works great so I don't see a need to replace the shock itself and was wondering if anyone here has experience changing the rear shock oil on an XL. The rear shock has an air fill valve on top that could be used to drain and fill oil, like the Harley shock I changed oil in a few years ago, but I don't know what viscosity or quantity to use. Any ideas? Anyone done this?