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what about 91 ?
Why would you use 91 in a 6L?
sorry, I read this thread as about the cost per kilometre of running this factory car on different fuels. So I just thought it was logical that 91 would also be tested given that holden has spent many hours and much $$$ to ensure it does run on 91. But what would they know, they just made the thing and did a million kilometers of testing.
I doubt they would have tested their new Gen 4 V8's on 91 octane fuel.
....Do you think it worthwhile contacting holden to tell them that 91 octane is sold in Australia? ....