RZR 800 Specific Discussion Best oils.. diffs, tranny, engine August 20, 2015 I have a 2010 ranger rzr 800 s and what are the best oils for the diffs tranny and engine … anyone use royal purple..i would really like to use them for oils and please provide specific weights if u use somthing different than recommended Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related