MArk, I believe that our octane is actually has more "Umph".  I believe
that the average method lessens the rating.
Anyone out there who can clarify?

John REynolds
81 Westy

PLEASE snip your posts, some of us are in digest mode.(And more would be
if thye knew it existed)

---SNIp----- So the 1B is 200 HP, while the 2B is 190 HP,
and the 3B is 220 HP - and the fuel grade is 98,98,95
respectively...Ouch!!!
Here in the states the highest is 91 octane, and our 91 octane is lower
than
the 91 octane found in Europe - [because ours is an average of your
system
of measure and our old system of measure....]---SNIP---