I started out running Amsoil 0W40 for my first 3 oil changes and while it worked well, at times there was a slight clutch drag and the clutch would squeal when being worked hard. Recently tried ATF type F for my last change, having ridden once since, squeal is gone and the clutch shifts nice. It does concern me though over how thin of an oil this is. Its like pouring water into the gear box?
The only Rotella and can find in Can is diesel motor oil. Is this essentially the same thing? I was under the impression that all car / truck motor oils weren't a good choice for a bikes wet clutch because of the friction modifiers? Does Rotella not include these friction additives?