Many years ago Shell introduced their sport fuel (well, sort of). Didn't Work well, and they had to take it out of the market. Big tv stories of engines collapsing because of Shell.
Some years later the reintroduced the stuff, now different additives supposedly. The v-max.
I've run on that ever since. No probs on either the Laverda SFC1000 or my Corrado G60 or my Esprit Turbo SE.
I've had the G60 on a rolling bed, and used 98 octane from another brand - 183 hk.
Shell v-max (99) - 187 Hk.
Engine seems to be running smoother and a bit more quiet.
I may add that the 102 octane from Shell romania, also tried, run very very nice indeed. Didn't have enough to take home and re-run on a dyno.
Just my two p.
Kind regards,
Jacques.