Originally Posted by Blackheart58

...I have spent hundreds of dollars on Used Oil Analysis, and this is what I do, in case you might care: I save my money, use something like Rotella 15w40 or most any brand-name 20w50, and change it before I hit 1500 miles. I leave the filter in for at least two oil changes...they get more efficient as they are seasoned, and oil good quality oil filters EASILY last 3000 miles in these bikes with no increase in insoluables on the UOA.