[x300] Premium fuel

If I remember right most of the petrol pumps in the UK give
you choices of 93, 95, and 98 octane fuel.

I’ve been told that our cars require the premium fuel over
there which would be 97 or 98 octane. The highest I can buy
here in the states in 93 octane. Which would be the low end
in the U.K. and Europe.

I have been wondering if the cars for the U.S. market have
the timing set a bit lower to account for the high octane
fuel not being available.–
1995 Jaguar XJ6
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North America and Europe use different octane scales. Europe uses
“research” octane numbers, whereas in North America we use the average
of the “research” and “motor” octane numbers. They measure different
things, but the scales are not directly comparable.

91 AKI (anti knock index, or the average of the research and motor) in
North America is roughly equal to 95 RON in Europe.

Craig
95 VDP

anorak wrote:>If I remember right most of the petrol pumps in the UK give

you choices of 93, 95, and 98 octane fuel.

I’ve been told that our cars require the premium fuel over
there which would be 97 or 98 octane. The highest I can buy
here in the states in 93 octane. Which would be the low end
in the U.K. and Europe.

I have been wondering if the cars for the U.S. market have
the timing set a bit lower to account for the high octane
fuel not being available.


1995 Jaguar XJ6
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

In reply to a message from Craig Talbot sent Fri 27 Jan 2006:

Now that you mention the different scales I think this was
explained to me once before and I had forgotten it.

Thanks for explaining it again.–
1995 Jaguar XJ6
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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In reply to a message from anorak sent Fri 27 Jan 2006:

When I bought my 94 X300 about 10 years ago, the main dealer
said they just need normal (UK) 95 octane, putting anything
else in was just a waste of money.

I’ve never tried running it on anything higher, shes always
seemed to go fine with that fuel.–
The original message included these comments:

I’ve been told that our cars require the premium fuel over
there which would be 97 or 98 octane. The highest I can buy
here in the states in 93 octane. Which would be the low end
in the U.K. and Europe.


Ken XK150 FHC S824252, see her on xkdata
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php