Just picked up a nice low mile 2008 v star 250. Not first bike but getting to old to handle the bigger bikes any more. Internet says uses 10w40 and manual says 20w50 I live in Wisconsin will ride Spring through Fall so 45 up to 90 I am thinking 10W40 Synthetic Motor Cycle Oil . Also trying to remove rear seat cushion and replace with a solo fender rack . Can not find one for this bike . Anyone have any luck finding one. Thanks