Ravenol? IMO not worth the money. What are we getting comapred to Pennzoil 5W40 or Castrol 0W40 or 0W30? Castrol 0W40, 0W30, TWS etc. are consistent performers regardless of PAO content etc.
I think Mobil1 ESP Formula 5W30 was case in point that final product is what matters not how much GR III, IV or V there is in the oil.
In my case, you are getting the Chrysler SRT approval, which Castrol and Mobil don't carry, and of course you are also getting the PAO content and a very different additive system using Tungsten. Whether that's better or not? Dunno
I bought my first batch of it on Amazon using points I had accrued and the 2nd batch from Blauparts when they were having a sale, so for me Ravenol hasn't been expensive.
OK, however I am trying to see value here. I am all up for lower NOACK, high HTHS, low KV100. So yeah, maybe if several UOA are turned exemplary with good TBN retention in known diluters etc. maybe. Just trying to figure out value compared to known performers.