2018 CHRYSLER 300 spark plug

Mileage or time passed (whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Additional Inspections
Inspect the CV joints. XX X XX
Inspect front suspension, tie rod ends, boot seals,
and replace if necessary. XXX X X X X
Inspect the rear axle fluid. Inspect the front axle fluid
(All Wheel Drive Only). XXX X X X X
Inspect the brake linings, replace as necessary. X X X X X X X
Adjust park brake on vehicles equipped with four
wheel disc brakes. XXX X X X X
Inspect transfer case fluid (All Wheel Drive Only). XX X XX
Additional Maintenance
Replace engine air filter. XX X XX
Replace cabin/air conditioning filter. X X X X X X X
Replace spark plugs. ** X
Flush and replace the engine coolant at 10 years or
150,000 miles (240,000 km) whichever comes first. XX
8
SERVICING AND MAINTENANCE 343

Mileage or time passed (whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Change the transfer case fluid; if using your vehicle
for any of the following: police, taxi, fleet, off-road, or
frequent trailer towing. (All Wheel Drive Only). XX
Change the rear axle fluid and on models equipped
with All Wheel Drive (AWD) change the front axle
fluid if using your vehicle for any of the following: po-
lice, taxi, fleet, off-road, or frequent trailer towing. XX X
Inspect and replace PCV valve if necessary. X
** The spark plug change interval is mileage based only,
yearly intervals do not apply.
344 SERVICING AND MAINTENANCE

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 specifications,
should be obtained immediately.
To minimize the possibility of catalytic converter damage:
•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.
NOTE: Your vehicle’s exhaust system may be equipped
with an Electronic Exhaust Valve (EEV) system, if the
exhaust system is replaced with aftermarket products a
Malfunction Indicator Lamp (MIL) will illuminate.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 open a cooling system pressure cap
when the radiator or coolant bottle is hot.
• Keep hands, tools, clothing, and jewelry away from
the radiator cooling fan when the hood is raised. The
fan starts automatically and may start at any time,
whether the engine is running or not.
• When working near the radiator cooling fan, discon-
nect the fan motor lead or turn the ignition to the
OFF mode. The fan is temperature controlled and can
start at any time the ignition is in the ON mode.
362 SERVICING AND MAINTENANCE

Do Not Use E-85 In Non-Flex Fuel Vehicles
Non-Flex Fuel Vehicles (FFV) are compatible with gasoline
containing up to 15% ethanol (E-15). Use of gasoline with
higher ethanol content may void the New Vehicle Limited
Warranty.
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.
CNG And LP Fuel System Modifications
Modifications that allow the engine to run on compressed
natural gas (CNG) or liquid propane (LP) may result in
damage to the engine, emissions, and fuel system compo-
nents. Problems that result from running CNG or LP are
not the responsibility of the manufacturer and may void or
not be covered under the New Vehicle Limited Warranty.
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. Gaso-
line 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.
408 TECHNICAL SPECIFICATIONS

ComponentFluid, Lubricant, or Genuine Part
Spark Plugs We recommend you use Mopar Spark Plugs.
Fuel Selection – 3.6L Engine 87 Octane, 0-15% Ethanol.
Fuel Selection – 3.6L Flex Fuel (E-85) Engine 87 Octane, Up to 85% Ethanol.
Fuel Selection – 5.7L Engine 89 Octane Recommended – 87 Octane Acceptable, 0-15%
Ethanol.
CAUTION!
• Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT) en-
gine coolant (antifreeze), may result in engine dam-
age and may decrease corrosion protection. Organic
Additive Technology (OAT) engine coolant is differ-
ent and should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant (anti-
freeze) or any “globally compatible” coolant (anti-
freeze). If a non-OAT engine coolant (antifreeze) is
introduced into the cooling system in an emergency,
the cooling system will need to be drained, flushed,
and refilled with fresh OAT coolant (conforming to
MS.90032), by an authorized dealer as soon as pos-
sible.
(Continued)
CAUTION! (Continued)
•Do not use water alone or alcohol-based engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or antirust products, as they may not
be compatible with the radiator engine coolant and
may plug the radiator.
• This vehicle has not been designed for use with
propylene glycol-based engine coolant (antifreeze).
Use of propylene glycol-based engine coolant (anti-
freeze) is not recommended.
414 TECHNICAL SPECIFICATIONS

Security Alarm......................... .32, 129
Arm The System ..........................32
Selection Of Coolant (Antifreeze) ...............413
Sentry Key Key Programming .........................31
Sentry Key (Immobilizer) ......................30
Sentry Key Replacement ....................23, 31
Service Assistance ......................... .466
Service Contract .......................... .468
Service Manuals .......................... .470
Shifting ................................ .224
Automatic Transmission ................224, 226
Shoulder Belts ............................ .169
Side View Mirror Adjustment ...................58
Signals, Turn ....................... .67, 135, 212
Siri .................................... .459
SiriusXM Guardian Vehicle Health Alert ...................... .458
Snow Chains (Tire Chains) ....................392
Snow Tires .............................. .388
Spare Tire ............................... .321
Spare Tires ........................ .388, 389, 390
Spark Plugs ............................. .413Specifications
Fuel (Gasoline) ......................... .413
Oil.................................. .413
Speed Control Accel/Decel ........................ .237, 238
Accel/Decel (ACC Only) ...................244
Cancel ............................... .239
Resume .............................. .239
Set .................................. .237
Speed Control (Cruise Control) ..........236, 237, 239
Sport Mode .............................. .234
Starting ............................. .216, 217
Automatic Transmission ....................216
Button .................................24
Cold Weather .......................... .220
Engine Fails To Start ..................... .220
Starting

And Operating ...................216, 217
Starting Procedures ..................... .216, 217
Steering ..................................54
Column Lock ............................54
Power ............................... .235
Tilt Column .......................... .54, 55
Wheel, Heated ...........................56
Wheel, Tilt .......................... .54, 55
484 INDEX