such as gasoline that is advertised as Top Tier
Detergent Gasoline.
Fuel specifications
Do not use leaded gasoline; otherwise,
permanent damage to the catalytic con-
verter will result.
Failure to comply with these recommendations
may also result in unscheduled maintenance.<
Do not fill the tank with E85, i.e. fuel containing
85% ethanol, nor with FlexFuel. Otherwise, the
engine and fuel supply system will be dam-
aged.<
Required fuel
Super Premium gasoline/AKI 91
This gasoline is highly recommended.
However, you may also use gasoline with less
AKI. The minimum AKI Rating is:
>
>
Cooper S, John Cooper Works: 89
Cooper: 87
If you use gasoline with this minimum AKI Rat-
ing, the engine may produce knocking sounds
when starting at high outside temperatures. This
has no effect on the engine life.
Do not use any gasoline below the speci-
fied minimum fuel grade. Otherwise, the
engine could be damaged.<
Use high-quality brands
Field experience has indicated significant differ-
ences in fuel quality: volatility, composition,
additives, etc., among gasolines offered for sale
in the United States and Canada. Fuels contain-
ing up to and including 10% ethanol or other
oxygenates with up to 2.8% oxygen by weight,
that is, 15% MTBE or 3% methanol plus an
equivalent amount of co-solvent, will not void
the applicable warranties with respect to defects
in materials or workmanship.
The use of poor-quality fuels may result in
drivability, starting and stalling problems
especially under certain environmental condi-
tions such as high ambient temperature and
high altitude.
Should you encounter drivability problems
which you suspect could be related to the fuel
you are using, we recommend that you respond
by switching to a recognized high-quality brand
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