Chrysler 300 C 2009, Owner'S Manual, Page: 254 / 676

252 TECHNICAL SPECIFICATIONS
high-quality unleaded gasoline having an
Research Octane Number (RON) of 91 to 95.
The manufacturer recommends the use of a
95 Research Octane Number for optimum
performance.
Light spark knock at low engine speeds is not
harmful to your engine. However, continued
heavy spark knock at high speeds can cause
damage, and immediate service is required.
Poor quality gasoline can cause problems such
as hard starting, stalling, and hesitations. If you
experience these symptoms, try another brand
of gasoline before considering service for the
vehicle.
Besides using unleaded gasoline with the
proper octane rating, gasolines that contain
detergents, corrosion and stability additives are
recommended. Using gasolines that have these
additives may help improve fuel economy,
reduce emissions, and maintain vehicle perfor -
mance.
Poor quality gasoline can cause problems such
as hard starting, stalling, and hesitations. If you
experience these symptoms, try another brand
of gasoline before considering service for the
vehicle.
6.4L Engine
Do not use E-85 flex fuel or ethanol blends
greater than 15% in this engine.
This engine is designed to meet all emissions
regulations and provide excellent fuel economy
and performance when using high-quality
unleaded gasoline having an Research Octane
Number (RON) of 98 or higher. The manufac -
turer recommends the use of 98 Research
Octane Number (RON) or higher for optimum
performance.
While operating on gasoline with the required
octane number, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a heavy
knocking sound, see your dealer immediately.
Use of gasoline with a lower than recommended
octane number can cause engine failure and
may void or not be covered by the New Vehicle
Limited Warranty.
Poor quality gasoline can cause problems such
as hard starting, stalling, and hesitations. If you
experience these symptoms, try another brand
of gasoline before considering service for the
vehicle.
Methanol
(Methyl) is used in a variety of concentrations
when blended with unleaded gasoline. You may
find fuels containing 3% or more methanol
along with other alcohols called cosolvents.
Problems that result from using methanol/
gasoline are not the responsibility of the manu -
facturer. While MTBE is an oxygenate made
from Methanol, it does not have the negative
effects of Methanol.
Ethanol
The manufacturer recommends that your
vehicle be operated on fuel containing no more
than 15% ethanol. Purchasing your fuel from a
reputable supplier may reduce the risk of
exceeding this 15% limit and/or of receiving
fuel with abnormal properties. It should also be
noted that an increase in fuel consumption
should be expected when using
ethanol-blended fuels, due to the lower energy
WARNING!
Do not use gasolines containing Methanol.
Use of these blends may result in starting and
drivability problems and may damage critical
fuel system components.
20_LX_OM_ENA_GCC_t.book Page 252