The US manual recommends 89 octane mid grade. I don't know what Triumph may have done for the Australian market.
Unless an engine is engineered for a higher octane fuel, the use of higher octane fuels is like throwing money out the exhaust pipe.
Gasoline has as many myths attached to it as motor oil.
http://www.google.com/search?hl=en&s...ded&spell=1
