I do see your logic,that's why I said I get your point. The RPM's shouldn't change but if it worked as it claims you would require less fuel for the same RPM's because it is now burning more efficient, right?. Once again, not trying to sell the product, just trying to look at all angles. We put additives in our gas to clean it up so there seems to be a certain amount of logic to cleaning up what comes through the PCV valve. Whether it actually works or not I don't know but there seems to be some logic to it.