I have done field testing for several of the manufacturers. Yes I know Digi's background and it is in industrial convyers. If I need to know how to setup or lube a industral conveyor, I will call Digi. I don't know as much as some and more than most. If I don't know I can find out. My motorcycle has oil filters to remove particiulates and debris from the oil. Yes, it is good to change on a regular basis but I find that many running cheap oil are changing way too often and that isn't good for the environment and my time is worth something also. Dwight You went through these arguments before.. Dude you need to CHILL, You are stating opinions that you have made your self. you have never actuly proved with any visable viable evidance to back such claims. So why do you allways put other people down as if they don't know anything. This digilube guy just because he maybe in convayers doesn't mean he doesn't know anything about engines. You blind your self with your own indulgance that you can't see that maybe you're not allways right. You can state your OPINION and albeit. How ever Unless you can prove 100% that you're right, which you will NEVER be able to do so please STOP putting other peoples opinions down and trying to make them look inferior to your self. Now since I've said this. This dwight guy will be trying to get me banned again.