The CAM2 is not the right fluid spec for the TR580 Lineartronic II transmission. The correct fluid spec is Subaru CVTFII. Subaru now makes four different CVT fluids, none is interchangeable with the other.
But if you are going to try another brand it must be compatible with CVTFII spec. The CAM2 only lists a very old, obsolete ECVT spec that I think goes all the way back to the Subaru Justy. ECVT is not for the Lineartronic II transmission. I would be leery of the CAM2 fluid for that reason. I would hate to see another member damage their Subaru CVT.