Thanks Erik, actually I religiously change it every 3,000 miles use Castrol 5-30 always, never anything thicker. I use purcolater (OOPs mean purolater) oil filters, (their better than frams). My wifes XL-7 hasn't used any oil since I added that and we've been using it, maybey its just a fluke thing. I don't really drive them hard, shift |removethispart|@3500 rpm usually somethimes 4000, only once ina while do I wind it out to get moving. Oh well, thanks for the suggestions though, any more is really appreciated.