2015 Ram 1500 Spark plug

•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
Methylcyclopentadienyl Manganese Tricarbonyl (MMT)
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.
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)
5
STARTING AND OPERATING 637

Under normal operating conditions, the catalytic converter
will not require maintenance. However, it is important to
keep the engine properly tuned to assure proper catalyst
operation and prevent possible catalyst damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer’s specifica-
tions, should be obtained immediately.
To minimize the possibility of catalytic converter dam-
age:
•Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
Cooling System
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If
you see or hear steam coming from under the hood,
do not open the hood until the radiator has had time
to cool. Never try to open a cooling system pressure
cap when the radiator is hot.
774 MAINTAINING YOUR VEHICLE

ComponentFluid, Lubricant, or Genuine Part
Engine Oil – 5.7L Engine 2500/3500
trucks operating under a gross com-
bined weight ratinggreaterthan 14,000
lbs/(6,350 kg.)
We recommend you use API Certified SAE 5W-30 Engine Oil, meeting
the requirements of Chrysler Material Standard MS-6395 such as
MOPAR®, Pennzoil®, Shell Helix® or equivalent. Refer to your engine
oil filler cap for correct SAE grade.
Engine Oil – 6.4LFor best performance and maximum protection under all types of
operating conditions, the manufacturer only recommends full synthetic
engine oils that meet the American Petroleum Institute (API) categories
of SN. The manufacturer recommends the use of Pennzoil Ultra™
0W-40 or equivalent MOPAR® engine oil meeting the requirements of
Chrysler Material Standard MS-12633 for use in all operating tempera-
tures.
Engine Oil FilterWe recommend you use MOPAR® brand Engine Oil Filters.
Spark PlugsWe recommend you use MOPAR® Spark Plugs.
Fuel Selection – 3.6L Engine87 Octane.
Fuel Selection – 5.7L/6.4L Engines 87 Octane Acceptable - 89 Octane Recommended.
822 MAINTAINING YOUR VEHICLE

Mileage or time passed
(whichever comes first)
20,00030,00040,00050,00060,00070,00080,00090,000100,000110,000120,000130,000140,000150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,00048,00064,00080,00096,000112,000128,000144,000160,000176,000192,000208,000224,000240,000
Inspect the brake linings, replaceas necessary.XXX X X X X
Adjust parking brake as necessary.XXX X X X X
Inspect transfer case fluid.XXX
Additional Maintenance
Replace engine air filter.XXXXX
Replace spark plugs(3.6L engine).**X
Replace spark plugs(5.7L engine).**X
Replace spark plugs(6.4L engine).**X
8
MAINTENANCE
SCHEDULES
832 MAINTENANCE SCHEDULES

Mileage or time passed
(whichever comes first)
20,00030,00040,00050,00060,00070,00080,00090,000100,000110,000120,000130,000140,000150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,00048,00064,00080,00096,000112,000128,000144,000160,000176,000192,000208,000224,000240,000
Inspect the transfer case fluid,change for any of the following:police, taxi, fleet, or frequenttrailer towing.
XX
Change the transfer case fluid. X
Inspect and replace PCV valve ifnecessary.X
** The spark plug change interval is mileage based only,
yearly intervals do not apply.8
MAINTENANCE
SCHEDULES
834 MAINTENANCE SCHEDULES

Transfer Case, Shifting into Transfer Case
Neutral (N)...........................676
Transfer Case, Shifting out of Transfer Case
Neutral (N)...........................679
Shift Lever Override.......................736
Shoulder Belts............................53
Signals, Turn.............................118
Sliding Rear Window
Power...............................246
Snow Chains (Tire Chains)...................621
Snow Plow..............................669
Snow Tires..............................613
Spare Tire...............................615
Spark Plugs.............................821
Speed Control (Cruise Control)................186
Speedometer.............................294
Stabilizer/Sway Bar System..................531
Starting.................................34
Automatic Transmission..................449
Cold Weather..........................451
Engine Fails to Start.....................451
Remote...............................34
Starting Procedures (Gas Engines).............448
Steering
Power...............................575
Wheel, Heated.........................183
Wheel, Tilt............................182
Steering Wheel Audio Controls...............396
Steering Wheel Mounted Sound System Controls . . .396
Storage Compartment, Center Seat.............240
Storage, Vehicle...........................420
Storing Your Vehicle.......................807
Sun Roof...............................224
Supplemental Restraint System - Airbag..........67
Supplemental Tire Pressure Information.........620
Suspension, Air...........................516
Sway Control, Trailer.......................592
Synthetic Engine Oil.......................75810
INDEX 863