2013 Ram 2500 octane

FUEL REQUIREMENTS
3.6L And 4.7L Engine
These engines are designed to meet all
emissions regulations and provide excel-
lent fuel economy and performance when
using high quality unleaded “regular”
gasoline having an octane rating of 87. The
use of premium gasoline is not recommended, as it will
not provide any benefit over regular gasoline in these
engines.
5.7L Engine
This engine is designed to meet all emis-
sions regulations and provide satisfactory
fuel economy and performance when us-
ing high quality unleaded gasoline having an octane range of 87 to 89. The manufacturer recom-
mends the use of 89 octane for optimum performance.
The use of premium gasoline is not recommended, as it
will not provide any benefit over regular gasoline in
these engines.
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 experi-
ence these symptoms, try another brand of gasoline
before considering service for the vehicle.
Over 40 auto manufacturer’s world wide have issued and
endorsed consistent gasoline specifications (the World-
wide Fuel Charter, WWFC) which define fuel properties
necessary to deliver enhanced emissions, performance,
and durability for your vehicle. The manufacturer recom-
mends the use of gasolines that meet the WWFC speci-
fications, if they are available.
526 STARTING AND OPERATING

If a Non-FFV vehicle is inadvertently fueled with E-85
fuel, the engine will have some or all of these symptoms:
•operate in a lean mode
• OBD II “Malfunction Indicator Light” on
• poor engine performance
• poor cold start and cold drivability
• increased risk for fuel system component corrosion
To fix a Non-FFV vehicle inadvertently fueled once with
E-85 perform the following:
• drain the fuel tank (see your authorized dealer)
• change the engine oil and oil filter
• disconnect and reconnect the battery to reset the
engine controller memory
More extensive repairs will be required for prolonged
exposure to E-85 fuel.MMT In Gasoline
MMT (Methylcyclopentadienyl Manganese Tricarbonyl)
is a manganese-containing metallic additive that is
blended into some gasoline to increase octane. Gasoline
blended with MMT provides no performance advantage
beyond gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces spark plug
life and reduces emissions system performance in some
vehicles. The manufacturer recommends that gasoline
without MMT be used in your vehicle. The MMT content
of gasoline may not be indicated on the gasoline pump,
therefore, you should ask your gasoline retailer whether
the gasoline contains MMT. MMT is prohibited in Federal
and California reformulated gasoline.
528 STARTING AND OPERATING

Materials Added To Fuel
All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions and they would result in additional cost.
Therefore, you should not have to add anything to the
fuel.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine perfor-
mance and damage the emissions control system.
(Continued)
CAUTION! (Continued)
•An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune
or malfunctioning and may require immediate ser-
vice. Contact your authorized dealer for service
assistance.
• The use of fuel additives, which are now being
sold as octane enhancers, is not recommended.
Most of these products contain high concentrations
of methanol. Fuel system damage or vehicle perfor-
mance problems resulting from the use of such
fuels or additives is not the responsibility of the
manufacturer.
NOTE:
Intentional tampering with the emissions control
system can result in civil penalties being assessed against
you.
5
STARTING AND OPERATING 529

WARNING!
Ethanol vapors are extremely flammable and could
cause serious personal injury. Never have any smok-
ing materials lit in or near the vehicle when remov-
ing the fuel filler tube cap (gas cap) or filling the
tank. Do not use E-85 as a cleaning agent and never
use it near an open flame.
Fuel Requirements
Your vehicle will operate on both unleaded gasoline with
an octane rating of 87, or E-85 fuel, or any mixture of
these two. For best results, a refueling pattern that
alternates between E-85 and unleaded gasoline should be
avoided.
When you do switch fuel types it is recommended that:
•you do not switch when the fuel gauge indicates less
than 1/4 full •
you do not add less than 5 gallons (19 Liters) when
refueling
• you operate the vehicle immediately after refueling for
a period of at least 5 minutes
Observing these precautions will avoid possible hard
starting and/or significant deterioration in driveability
during warm up.
NOTE:
• When the ambient temperature is above 90° F (32° C),
you may experience hard starting and rough idle
following start up even if the above recommendations
are followed.
• Some additives used in regular gasoline are not fully
compatible with E-85 and may form deposits in your
engine. To eliminate driveability issues that may be
532 STARTING AND OPERATING

ComponentFluid, Lubricant, or Genuine Part
Spark Plugs – 4.7L Engine We recommend you use MOPAR® Spark Plugs. Up-
per Bank — (Gap 0.040 in [1 mm])
We recommend you use MOPAR® Spark Plugs.
Lower Bank — (Gap 0.051 in [1.30 mm])
Spark Plugs – 5.7L Engine We recommend you use MOPAR® Spark Plugs (Gap
0.043 in [1.1 mm])
Fuel Selection – 3.6L and 4.7L Engines 87 Octane
Fuel Selection – 5.7L Engine 87 Octane Acceptable - 89 Octane Recommended
7
MAINTAINING YOUR VEHICLE 699

Starting............................. .533
Flooded Engine Starting ....................345
Fluid, Brake ............................ .700
Fluid Capacities ......................... .696
Fluid Leaks ............................ .120
Fluid Level Checks Brake ............................... .661
Power Steering ........................ .467
Fluids, Lubricants and Genuine Parts ...........698
Fog Lights ............................. .162
Fold Flat Load Floor ...................... .223
Four-Way Hazard Flasher ...................577
Four Wheel Drive ........................ .388
Freeing A Stuck Vehicle .....................621
Front Axle (Differential) .....................663
Fuel .................................. .526
Adding ............................. .534
Additives ............................ .529
Clean Air ............................ .527Ethanol
............................. .527
Filler Cap (Gas Cap) .....................536
Gasoline ............................. .526
Materials Added ....................... .529
Methanol ............................ .527
Octane Rating ......................... .526
Requirements ......................... .526
Tank Capacity ......................... .696
Fuel, Flexible ........................... .530
Fuel System Caution ...................... .535
Fuses ................................. .675
Gas Cap (Fuel Filler Cap) ...................536
Gasoline, Clean Air ....................... .527
Gasoline (Fuel) .......................... .526
Gasoline, Reformulated .....................527
Gauges Speedometer ......................... .260
T
achometer ........................... .255
10
INDEX 727

Tires ................................493
Locks ..................................34
Automatic Door .........................36
Child Protection .........................37
Door .................................34
Power Door ............................36
Low Tire Pressure System ...................513
Lubrication, Body ........................ .649
Maintenance Free Battery ....................647
Maintenance Procedures ....................642
Maintenance Schedule ..................... .704
Malfunction Indicator Light (Check Engine) .......640
Manual, Service ......................... .718
Manual Transmission Fluid Level Check ...................... .665
Lubricant Selection ..................... .700
Memory Seat ........................... .151
Methanol .............................. .527Mirrors
............................... .127
Electric Powered ....................... .132
Heated .............................. .133
Memory ............................. .151
Outside ............................. .129
Rearview ............................ .127
Trailer Towing ........................ .135
Modifications/Alterations, Vehicle ...............7
Monitor, Tire Pressure System ................513
Mopar Parts ............................ .641
MTBE/ETBE ........................... .527
Multi-Function Control Lever .................167
Navigation System (Uconnect® gps) ............189
New Vehicle Break-In Period .................115
Occupant Restraints ........................46
Occupant Restraints (Sedan) ..................67
Octane Rating, Gasoline (Fuel) ................526
10
INDEX 731