BMW 2009 X6 xDrive50i Owner's Manual

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Fuel specifications
Gasoline engine: required fuel
Do not use leaded gasoline, otherwise 
damage to the catalytic converter will 
result.
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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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 indicated significant dif-
ferences 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 
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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BMW X5 with BMW Advanced Diesel: 
Required fuel
Ultra-low sulfur diesel
The engine of your BMW is designed for diesel 
with a low sulfur content:
Ultra-low sulfur diesel ASTM D 975-07a.
Refuel only with ultra-low sulfur diesel. 
The percentage of biodiesel in the fuel 
must not exceed 5
Ξ, referred to as B5. Do not 
refuel with gasoline. If the vehicle has been 
refueled with incorrect fuel such as gasoline, do 
not start the engine; otherwise, there is a dan-
ger of engine damage.
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After incorrect refueling, contact a BMW Sports 
Activity Vehicle Center.
The fuel filling neck is designed for refuel-
ing with diesel nozzles.
If the nozzle cannot be inserted into the fuel 
filler pipe of your BMW, please check to make 
sure that you are refueling with a diesel fuel 
pump and whether this is equipped with a diesel 
nozzle.
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Winter diesel
In order to assure the operational reliability of 
the diesel engine, during cold seasons, please 
refuel with winter diesel, which is sold at fuel 
stations during this time of year. The standard 
fuel filter heating prevents the supply of fuel 
from stalling during driving.
Do not mix in any additives or gasoline; 
otherwise, there is the risk of engine dam-
age.
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BMW X5 with BMW Advanced 
Diesel
The concept
BMW Advanced Diesel reduces nitrogen oxides 
in the diesel exhaust of your vehicle by injecting 
the reducing agent diesel exhaust fluid into the 
exhaust line. In the catalytic converter, a chem-
ical reaction occurs that minimizes nitrogen 
oxides.
Online Edition for Part no. 01 41 2 600 809 - © 09/08 BMW AG