Not sure what schedule you use now, elk... I think that the price of the Rotella makes it so you can probably change it out every ride or two without breaking the bank, and that should provide you with great protection and piece of mind for your engine. I probably wouldn't run ANY oil past about 6 run hours. And I hate to let one go that long...too many contaminants there even if the oil is still in grade. I like to clean my filters with brake cleaner in the spray can. They should be fine unless you see the mesh start to change shape.