It seems the Swift fuel is being pushed to market without sufficient testing. at least test results that are publish so anyone can review.
I have flown my plane on the Swift 94UL and it did not perform as well as 100LL in hot and high conditions; I could not run peak EGT during climb without roughness and CHTs increasing like I can on 100LL.
Please publish knock data on a 8.5:1 Lycoming, and publish the molecular content to make sure there are no bad things in there that will destroy rubber seals or take off paint.