20 years ago, I used a castrol oil called Super bike oil, it was a 5w40 pao type oil, Super high Heat control, never seen an oil take heat like that one. But I wished it was in a higher viscosity range. The name died, and then Power 1 was born. I was wondering if the same formulation and higher viscosities. Looks like it might be, this oil is not GTX, whoever suggests its anything like GTX, does not know what they are talking about.
But I really like 20w50's , and this one shows to be a higher end PAO type oil.