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WARNING!
To avoid the risk of forcing the vehicle off the jack, do
not tighten the lug nuts/bolts fully until the vehicle
has been lowered. Failure to follow this warning may
result in personal injury.
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 an octane
number lower than recommended 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.
3.0L STANDARD OUTPUT ENGINE
Do not use E-85 flex fuel or ethanol blends greater than
15% in this engine.
This engine is designed to meet all emis-
sions requirements, and provide satisfactory
fuel economy and performance, when using
high-quality unleaded regular gasoline hav-
ing an octane rating of 87, as specified by the (R+M)/
2 method. The use of 91 or higher octane premium
gasoline will allow these engines to operate to optimal
performance. This increase in performance is most
noticeable in hot weather or under heavy load condi-
tions such as while towing.
3.0L HIGH OUTPUT ENGINE
Do not use E-85 flex fuel or ethanol blends greater than
15% in this engine.
This engine is 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 in this engine.
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 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 in these engines.
REFORMULATED GASOLINE
Many areas of the country require the use of cleaner-
burning gasoline referred to as “reformulated gasoline”.
Reformulated gasoline contains oxygenates and are
specifically blended to reduce vehicle emissions and
improve air quality.
The use of reformulated gasoline is recommended.
Properly blended reformulated gasoline will provide
improved performance and durability of engine and fuel
system components.
MATERIALS ADDED TO FUEL
Besides using unleaded gasoline with the proper
octane rating, gasolines that contain detergents, corro-
sion and stability additives are recommended. Using
gasolines that have these additives will help improve
fuel economy, reduce emissions, and maintain vehicle
performance.
Designated TOP TIER Detergent Gasoline
contains a higher level of detergents to fur-
ther aide in minimizing engine and fuel sys-
tem deposits. When available, the usage of
TOP TIER Detergent Gasoline is recommended. Visit
www.toptiergas.com for a list of TOP TIER Detergent
Gasoline retailers.
Designated TOP TIER Detergent Gasoline contains a
higher level of detergents to further aide in minimizing
engine and fuel system deposits. When available, the
usage of Top Tier Detergent Gasoline is recommended.
Visit www.toptiergas.com, at the link below, for a list of
TOP TIER Detergent Gasoline retailers.
Torque Patterns
TECHNICAL SPECIFICATIONS 343
9
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