BMW 2008 650i Coupe Manual Do Proprietário

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Fuel specifications
Never used leaded gasoline; it will perma-
nently damage the catalytic converter. 
Do not use E85, i.e. fuel that consists of 85
ethanol, or Flex Fuel. Otherwise permanent 
damage to the engine and the fuel supply sys-
tem will result.
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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 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 affect on the engine life.
Do not use gasoline below the specified 
minimum quality, otherwise engine dam-
age can result.
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Use high-quality brands
Field experience has demonstrated significant 
differences in fuel quality: volatility, composi-
tion, additives, etc., among gasolines offered for 
sale in the United States and Canada. Fuels 
containing 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 
problems relating to drivability and start-
ing, and to a tendency to stall, especially under 
certain environmental conditions 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 
such as gasoline that is advertised as Top Tier 
Detergent Gasoline.
Failure to comply with these recommendations 
may also result in unscheduled maintenance.
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