Castrol oil questions

[quawk]

I am a new member but have read many if not most of the oil related posts. My question is, is the Castrol GTX oil that is  highly recommended here the same as Castrol Classic, that is also mentioned, or has GTX replaced the Classic, and are both readily available? I am in the U.S.  I currently have the GTX in my bike, which, unfortunately have yet to get to start and run.

[wayne]

I'm not in the US QUAWK so can't help specifically. Castrol has a tech department which would be able to answer that question with a quick 'phone call.