2018 DODGE CHALLENGER SRT octane

Tighten the lug nuts/bolts in a star pattern until each
nut/bolt has been tightened twice. Ensure that the socket is
fully engaged on the lug nut/bolt (do not insert it half-
way).
NOTE:If in doubt about the correct tightness, have them
checked with a torque wrench by your authorized dealer or
service station.
After 25 miles (40 km), check the lug nut/bolt torque to be
sure that all the lug nuts/bolts are properly seated against
the wheel.WARNING!
To avoid the risk of forcing the vehicle off the jack, do
not tighten the lug nuts fully until the vehicle has been
lowered. Failure to follow this warning may result in
personal injury.
FUEL REQUIREMENTS
6.2L Supercharged Engine
Do not use E-85 flex fuel or ethanol blends greater than
15% in this engine.
These engines are designed to meet all
emissions regulations, provide optimal
fuel economy and performance when
using high-quality unleaded “Pre-
mium” 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.
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
Torque Patterns
376 TECHNICAL SPECIFICATIONS

making a heavy knocking sound, see your dealer immedi-
ately. Use of gasoline with a lower than recommended
octane number can cause engine failure and may void or
not be covered by 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 consider-
ing service for the vehicle.
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 emis-
sion regulations, provide optimal fuel
economy and performance when using
high-quality unleaded “Premium” gaso-
line having a posted octane number of
91 as specified by the (R+M)/2 method.
The use of 91 or higher octane “Pre-
mium” gasoline is required for in this engine.
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 your dealer immedi-
ately. Use of gasoline with a lower than recommended
octane number can cause engine failure and may void or
not be covered by 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 consider-
ing service for the vehicle.
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 specifi-
cally blended to reduce vehicle emissions and improve air
quality.
The use of reformulated gasoline is recommended. Prop-
erly 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, corrosion and
stability additives are recommended. Using gasolines that
9
TECHNICAL SPECIFICATIONS 377

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.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gasoline is prohibited by Federal
law. Using leaded gasoline can impair engine perfor-
mance and damage the emissions control system.
(Continued)
9
TECHNICAL SPECIFICATIONS 379

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 service.
Contact an 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 metha-
nol. Fuel system damage or vehicle performance
problems resulting from the use of such fuels or
additives is not the responsibility of the manufac-
turer and may void or not be covered under the New
Vehicle Limited Warranty.
NOTE: Intentional tampering with the emissions control
system can result in civil penalties being assessed against
you.
Carbon Monoxide Warnings
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon mon-
oxide poisoning:
• Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas, which can
kill. Never run the engine in a closed area, such as a
garage, and never sit in a parked vehicle with the
engine running for an extended period. If the vehicle
is stopped in an open area with the engine running
for more than a short period, adjust the ventilation
system to force fresh, outside air into the vehicle.
• Guard against carbon monoxide with proper main-
tenance. Have the exhaust system inspected every
time the vehicle is raised. Have any abnormal condi-
tions repaired promptly. Until repaired, drive with
all side windows fully open.
380 TECHNICAL SPECIFICATIONS

FLUID CAPACITIES
U.S.Metric
Fuel (Approximate)
91 Octane or higher, 0-15% Ethanol 18.5 Gallons70 Liters
Engine Oil With Filter
SAE 0W-40, Synthetic API Certified 7 Quarts6.6 Liters
Cooling System *
6.2 Supercharged & 6.4L Engine (Mopar Antifreeze/Engine Coolant
(OAT coolant conforming to MS.90032) 10 Year/150,000 Mile Formula
or equivalent) 15.2 Quarts
14.4 Liters
6.2 Supercharged Intercooler (Mopar Antifreeze/Engine Coolant (OAT
coolant conforming to MS.90032) 10 Year/150,000 Mile Formula or
equivalent) 4.5 Quarts
4.2 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
9
TECHNICAL SPECIFICATIONS 381

FLUIDS AND LUBRICANTS
Engine
ComponentFluid, Lubricant, or Genuine Part
Engine/Intercooler Coolant We recommend you use Mopar Antifreeze/Coolant 10 Year/150,000 Mile For-
mula OAT coolant conforming to MS.90032.
Engine Oil For best performance and maximum protection under all types of operating
conditions, the manufacturer only recommends full synthetic engine oils.
The manufacturer recommends the use of Pennzoil Ultra Platinum 0W-40 or
equivalent Mopar engine oil meeting the requirements of FCA Material Stan-
dard MS-12633 for use in all operating temperatures.
Engine Oil Filter Mopar Engine Oil Filter or equivalent.
Spark Plugs We recommend you use Mopar Spark Plugs.
Fuel Selection 91 Octane or higher, 0-15% Ethanol.
382 TECHNICAL SPECIFICATIONS

Clean Air............................. .377
Ethanol .............................. .378
Filler Cap (Gas Cap) ..................... .267
Gasoline .............................. .376
Materials Added ........................ .377
Methanol ............................. .378
Octane Rating ....................... .376, 382
Requirements .......................... .376
Specifications .......................... .382
Tank Capacity .......................... .381
Fueling ................................. .267
Fuses .................................. .283
Garage Door Opener (HomeLink) ................84
Gas Cap (Fuel Filler Cap) .....................267
Gasoline, Clean Air ........................ .377
Gasoline, Reformulated ..................... .377
Gear Ranges ............................. .223
Glass Cleaning ........................... .372
Gross Axle Weight Rating .....................269
Gross Vehicle Weight Rating ...................269
GVWR ................................. .269Hazard
Driving Through Flowing, Rising, Or Shallow Standing
Water ................................ .271
Hazard Warning Flashers .....................274
Headlights Automatic ..............................59
Cleaning .............................. .369
High Beam/Low Beam Select Switch ...........58
Lights On Reminder .......................60
On With Wipers ..........................60
Passing ................................59
Switch .................................57
Time Delay ..............................60
Washers .............................. .322
Head Restraints ......................... .48, 49
Head Rests ............................ .48, 49
Heated Mirrors .............................56
Heater ...................................67
Heater, Engine Block ........................211
High

Beam/Low Beam Select (Dimmer) Switch ......58
Hill Start Assist ........................... .135
HomeLink (Garage Door Opener) ................84
Hood Prop ................................80
Hood Release ..............................80
12
INDEX 473

Manual Transmission.................215, 342, 344
Fluid Level Check .....................342, 344
Map/Reading Lights .........................62
Memory Feature (Memory Seats) ................40
Memory Seat ..............................40
Memory Seats And Radio .....................40
Methanol ............................... .378
Mirrors ..................................54
Electric Powered ..........................56
Electric Remote ...........................56
Heated .................................56
Outside ................................55
Rearview ........................... .54, 274
Vanity .................................56
Modifications/Alterations, Vehicle ................6
Monitor, Tire Pressure System ..................148
Mopar Parts ............................. .465
Multi-Function Control Lever ...................58
Occupant Restraints ........................ .154
Octane Rating, Gasoline (Fuel) ..............376, 382
Oil Change Indicator ....................... .103
Reset ................................ .103
Oil, Engine ........................... .324, 382
Capacity .............................. .381Change Interval
........................ .324
Checking ............................. .322
Dipstick .............................. .322
Disposal .............................. .326
Filter ............................. .326, 382
Filter Disposal .......................... .326
Materials Added To ...................... .325
Pressure Warning Light ....................114
Recommendation ........................ .381
Synthetic ............................. .325
Viscosity .......................... .325, 381
Oil Filter, Change ......................... .326
Oil Filter, Selection ......................... .326
Oil Pressure Light ..........................114
Onboard Diagnostic System ...................122
Operating

Precautions ...................... .122
Operator Manual (Owner’s Manual) ...............5
Outside Rearview Mirrors .....................55
Overheating, Engine ....................... .306
Owner’s Manual (Operator Manual) ...........5,466
Paddle Shifters ........................... .227
Paddle Shift Mode ......................... .227
Paint Care ............................... .368
Panic Alarm ...............................20
476 INDEX