Fuel Requirements; L Supercharged And 6.4L Engine - Dodge DURANGO Features Manual

62 TECHNICAL SPECIFICATIONS

FUEL REQUIREMENTS

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 a dealer immediately. Use
of gasoline with a lower than recommended
octane number can cause engine failure and
may void 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.
6.2L S A
UPERCHARGED ND
E
NGINE
Do not use E-85 flex fuel or ethanol blends
greater than 15% in this engine. The use of
octane boosting additives is NOT permitted for
use in the 6.2L Supercharged engine.
6.4L
These engines are designed to meet
all emission regulations, provide
optimal fuel economy and
performance when using high-quality
unleaded "Premium" gasoline having a posted
octane number of 91 as specified by the
(R+M)/2 method. The use of 91 or higher
octane "Premium" gasoline is required for in
this engine.