Curiosity got the best of me so I spent the $25 for an oil analysis from Blackstone Labs. I wanted to know if this oil is still stable in case I wanted to try extended oil change intervals up to 5,000 miles. My 900 Classic had 11,470 miles on it and I have been running Amsoil 20W50 motorcycle oil for 3,053 miles at the time of the test. Here are the results. Anybody else wanting to do comparisons on their favorite oils would be welcomed here. Bring it on please.