User Manual - Page 276

For 2023 DODGE CHALLENGER.

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274 TECHNICAL SPECIFICATIONS
After 25 miles (40 km), check the lug nut/bolt torque to be
sure that all the lug nuts/bolts are properly tightened.
Torque Patterns
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.
3.6L 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 and provide excellent fuel economy
and performance when using high-quality
unleaded regular gasoline having an octane
rating of 87 as specified by the (R+M)/2 method. The use
of higher octane premium gasoline will not provide any
benefit over regular gasoline in these engines.
5.7L ENGINE (WITH AUTOMATIC
T
RANSMISSION)
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 and provide satisfactory fuel
economy and performance when using high
quality unleaded gasoline having a posted
octane number range of 87 to 89 as specified by the
(R+M)/2 method. The use of 89 octane plus gasoline is
recommended for optimum performance and fuel
economy.
5.7L ENGINE (WITH MANUAL
T
RANSMISSION)
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
for this engine.
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.
23_LA_OM_EN_USC_t.book Page 274
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