I was told they changed the formula by adding the small amount of extra lubricant purely so the weren't manufacturing an identical product which would make them liable. As for the rest of your points yes I think it would be interesting to read some of the science behind these products maybe the info is there on their websites which at the time of typing this I haven't looked. I wonder if it would be possible to get our rep or even the new owner of 4tec to come onto this thread via Peter Warman to state their case I could supply phone numbers if its agreeable to all.