Quote Originally Posted by aaronng View Post
Look at it on a case-by-case basis. Example, Castrol Edge 5w-30 is hydrocracked, but the Edge 0w-40 is PAO. Both say fully synthetic.
Where can I obtain that information? Is that on a website somewhere?

The same goes for the "recent words that Catrol and Mobil have switched to Group 3 instead of PAO for their Fully Synthetic range"....anyone knows the sources for this???