I found this very interesting, and I've noticed there's a few riders here so I figured I'd share. After running the DEALERS recomended oil (Yamalube 10w-50 semi-synthetic) in my Roadstar for the past couple years, found it discontinued when preparing to change my oil the other day. It's been replaced with a 20w-50. Well, I figured if I've gotta change to a 20-50 I may as well find one more affordable and more readily available (I was driving 30 mins to the dealer). Long story short, I found this test of motorcycle oils (link below). It was on an Amsoil site, so of course Amsoil was rated the best but I was amazed how low some other popular motorcycle oils scored...including the DEALER RECOMENDED oil I was running. I've since switched to the runner up oil, it's very well priced AND sold at every Autozone around. Can't beat that with a
stick.http://www.syntheticoilnlubes.com/pdf/g2156.pdf
stick.http://www.syntheticoilnlubes.com/pdf/g2156.pdf