The age old question. If you look at all the oil used in all the different bikes, around the world, you would be hard pressed to point your finger at any one and say it's bad. For everyone that says to do it one way, there will be someone that says do it the other. In the end you will see if you look hard, it doesn't matter. There was a guy here who bought a bike that sat for 13 years. Just for the fun of it he sent a sample of the oil in for testing. The results came back saying except for a higher level of moisture, the oil was good to be used. My point is don't obsess over if your doing it right because when you check the volume of people that do it there way, you'll see it doesn't make much if any difference.,,