Very good read sir. Thank you for the reference. What I got from this entire reading and PIO testing was this. Please correct me if I'm wrong. Royal Purple changed their formula and is no longer a true base IV synthetic. Pennzoil Ultra SN is great off the shelf oil but at 9 dollars a quart it's overpriced plus hard to find.
Funny, but I wonder why no testing shown of this PIO of Mobil 1 extended performance. They did regular Mobil 1 but no extended performance. Notice Redline wasn't on the test either. Funny how Redline and Mobil 1 EP are also base IV true synthetics but not on the testing sheet of this PIO. Was the other results left off by Amsoil?
Could it be that Amsoil didn't want those NOVAC numbers of Redline and EP showing to prove their a true base IV synthetic oil. No argument here that amsoil SS is top tier oil and base IV synthetic at that. Here is my question. Will person A's engine last longer and be in better wear condition using Amsoil SS over same person A using Royal Purple, Mobil 1 EP or Redline?
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