of course there is a scientific difference between 95 & 98.
but whether we, as run-of-the-mill riders, can feel this difference, is another thing.
whether there is a difference to our engines, is also another matter..
we're not motogp riders, or riding in a lab environment.
ride, stop. traffic light. traffic jam. a bit of expressway. a lot of engine idling at the traffic light.
whatever additives that supposedly improve fuel economy, or improve power/performance.. won't be felt by us.
its a placebo effect I tell u.
I have been pumping 95 in sportsbikes n touring bikes.