Zuk,
When you go looking for a jug of ams you will find 3 different varieties. series 2000, Dominator, and Interceptor.

From what I understand S2K is no longer being produced, I now run Dominator. It is WAY thicker than S2K.
I dont know anything about NOS, but I mixed the S2K at 32:1 without problems. Dominator at 32:1 was way messy and smokey. Switched to 50:1, rejetted and its spot on. I might be nuts but I think it smells different too.

 

i always run mine at 50-1,but as i told,that amsoil stuff is totally impressive when it come to how lean you can run,,,try it at 60:1.

 

OK,since I've been using Klotz Benol,and the engine internal part's have the Castor reisue on them,is it safe to just switch?Is Amsoil a Petroleum base oil or Castor base?I've been told that the two are not compatable and just switching could cause engine damage due to that.

 

Thats a good question Zuk. I'd say as long as the rateings of both oils are the same you would be ok. I'd call
Ams and ask them.