2017 DODGE VIPER fuel

TIRE SAFETY INFORMATION ..............210
▫ Tire Markings ........................ .210
▫ Tire Identification Number (TIN) ............213
▫ Tire Terminology And Definitions ...........214
▫ Tire Loading And Tire Pressure ............215
 TIRES — GENERAL INFORMATION .........220
▫ Tire Pressure ......................... .220
▫ Tire Inflation Pressures ..................221
▫ Tire Pressures For High Speed Operation .....222
▫ Radial Ply Tires ....................... .222
▫ Tire Types ........................... .223
▫ Run Flat Tires — If Equipped ..............223
▫ Spare Tires — If Equipped ................224
▫ Tire Spinning ........................ .226
▫ Tread Wear Indicators ...................226
▫ Life Of Tire .......................... .227
▫ Replacement Tires ..................... .227
TIRE CHAINS (TRACTION DEVICES) .........228
 TIRE ROTATION RECOMMENDATIONS ......229
 DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES ..................229
▫ Treadwear ........................... .230
▫ Traction Grades ....................... .230
▫ Temperature Grades .....................230
 TIRE PRESSURE MONITOR SYSTEM (TPMS) . . .231
▫ Tire Pressure Monitoring Low Pressure
Warnings ............................ .233
▫ Service TPMS Warning ...................233
▫ TPMS

Deactivation — If Equipped ...........234
▫ General Information .....................234
 FUEL REQUIREMENTS ...................235
▫ 8.4L Engine .......................... .235
▫ Reformulated Gasoline ..................235
▫ Gasoline/Oxygenate Blends ...............235
▫ E-85 Usage In Non-Flex Fuel Vehicles .........236
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▫CNG And LP Fuel System Modifications ......236
▫ MMT In Gasoline ...................... .236
▫ Materials Added To Fuel .................237
▫ Fuel System Cautions ....................237
▫ Carbon Monoxide Warnings ...............238
 ADDING FUEL ........................ .238
▫ Emergency Fuel Filler Door Release ..........239
TRAILER TOWING ..................... .242
 RECREATIONAL TOWING (BEHIND
MOTORHOME, ETC.) ....................242
▫ Towing This Vehicle Behind Another Vehicle
(Flat Towing With All Four Wheels On The
Ground) ............................ .242
 GROUND CLEARANCE ..................243
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STARTING PROCEDURES
Before starting your vehicle, adjust your seat, adjust the
inside and outside mirrors, fasten your seat belt, and if
present, instruct any other occupant to buckle their seat belt.
WARNING!
Never leave children alone in a vehicle. Leaving unat-
tended children in a vehicle is dangerous for a number
of reasons. A child or others could be seriously or
fatally injured. Do not leave the key fob in or near the
vehicle (or in a location accessible to children), and do
not leave the ignition of a vehicle equipped with
Keyless Enter-N-Go in the ACC or ON/RUN mode. A
child could operate power windows, other controls, or
move the vehicle.
CAUTION!
•Long periods of engine idling, especially at higher
than normal engine idle speeds, can cause excessive
exhaust temperatures, which can damage your ve-
hicle. Do not leave your vehicle unattended with the
engine running.
• Running an engine with a low oil level can cause
severe damage. Check the engine oil level at every
fuel fill-up.
Normal Starting
CAUTION!
The engine in your vehicle is designed for operation
down to 0°F (-18°C). Starting the engine below 0°F
(-18°C) coolant temperature creates a potential for
scuffing or seizing of internal components in this high
performance engine. To prevent engine damage, do not
start the engine at temperatures below 0°F (-18°C).
190 STARTING AND OPERATING

If Engine Fails To Start
CAUTION!
To prevent damage to the starter, do not crank the
engine for more than 15 seconds at a time. Wait 10 to 15
seconds before trying again.
WARNING!
•Never pour fuel or other flammable liquids into the
throttle body air inlet opening in an attempt to start
the vehicle. This could result in a flash fire causing
serious personal injury.
• Do not attempt to push or tow your vehicle to get it
started. Unburned fuel could enter the catalytic con-
verter and once the engine has started, ignite and
damage the converter and vehicle. If the vehicle has
a discharged battery, booster cables may be used to
obtain a start from a booster battery or the battery in
another vehicle. This type of start can be dangerous
if done improperly, so follow this procedure care-
fully. Refer to “Jump-Starting” in “What To Do In
Emergencies” for further information. If the engine is flooded, it may start to run, but not have
enough power to continue running when the ENGINE
START button is released. If this occurs, continue cranking
up to 15 seconds with the accelerator pedal pushed all the
way to the floor. Release the accelerator pedal and the
ENGINE START button once the engine is running
smoothly.
If the engine shows no sign of starting after two 15 second
periods of cranking with the accelerator pedal held to the
floor, the “Normal Starting” procedure should be repeated.
After Starting
The idle speed is controlled automatically, and it will
decrease as the engine warms up.
MANUAL TRANSMISSION
NOTE:
The parking brake should be engaged and the gear
selector placed into REVERSE before leaving the vehicle,
especially when parked on an incline.
Your vehicle is equipped with a high torque capacity dual
disc clutch. The clutch pedal must be fully pressed to the
floor during each shift. As you release the clutch pedal,
lightly press the accelerator pedal.
192 STARTING AND OPERATING

Recommended Shift Speeds
To use your manual transmission for fuel economy it
should be upshifted as listed below. Shift at the vehicle
speeds listed for acceleration. Earlier upshifts during cruise
conditions (relatively steady speeds) will result in in-
creased fuel economy, and may be used as indicated.
MANUAL TRANSMISSION
RECOMMENDED SHIFT SPEEDS 1-4 4-5 5-6
mph 1745 50
(km/h) (27) (72) (80)
Higher upshift speeds may be used to obtain a desired
acceleration rate.
Skip Shift Indicator Light
There are times when you must shift the trans-
mission directly from first gear into fourth gear
instead of from first gear into second gear. This is
to help you get the best possible fuel economy
from your vehicle. This occurs when engine coolant is
higher than 107°F (42°C), and vehicle speed is greater than
16 mph (26 km/h) but less than 18 mph (29 km/h), and engine speed is less than 1,550 RPM, and the transmission
is in first gear, and the accelerator is at 20% throttle or less.
The “Skip Shift Indicator Light” located in the tachometer
will illuminate during these times.
When the “Skip Shift Indicator Light” illuminates, the shift
mechanism will only allow shifts from first gear to fourth
gear. After you shift the transmission into fourth gear, you
can press the clutch in and shift to another forward gear.
Downshifting - Proper downshifting will improve fuel
economy and prolong engine life.
To maintain a safe speed and prolong brake life, downshift
to maintain a safe speed when descending a steep grade.
CAUTION!
If you skip more than one gear while downshifting or
downshift at too high a vehicle speed, you could
damage the engine, transmission, or clutch.
WARNING!
Skipping more than one gear while downshifting,
could cause you to lose control of your vehicle. You
could have a collision.
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TIRES — GENERAL INFORMATION
Tire Pressure
Proper tire inflation pressure is essential to the safe and
satisfactory operation of your vehicle. Four primary areas
are affected by improper tire pressure:
•Safety and Vehicle Stability
• Economy
• Tread Wear
• Ride Comfort
Safety
WARNING!
•Improperly inflated tires are dangerous and can
cause collisions.
• Underinflation increases tire flexing and can result
in overheating and tire failure.
• Overinflation reduces a tire’s ability to cushion
shock. Objects on the road and chuckholes can cause
damage that result in tire failure.
(Continued)
WARNING! (Continued)
•Overinflated or underinflated tires can affect vehicle
handling and can fail suddenly, resulting in loss of
vehicle control.
• Unequal tire pressures can cause steering problems.
You could lose control of your vehicle.
• Unequal tire pressures from one side of the vehicle
to the other can cause the vehicle to drift to the right
or left.
• Always drive with each tire inflated to the recom-
mended cold tire inflation pressure.
Both under-inflation and over-inflation affect the stability
of the vehicle and can produce a feeling of sluggish
response or over responsiveness in the steering.
NOTE:
• Unequal tire pressures from side to side may cause
erratic and unpredictable steering response.
• Unequal tire pressure from side to side may cause the
vehicle to drift left or right.
Fuel Economy
Underinflated tires will increase tire rolling resistance
resulting in higher fuel consumption.
220 STARTING AND OPERATING

For example, your vehicle may have a recommended cold
(parked for more than three hours) placard pressure of 30
psi (207 kPa). If the ambient temperature is 68°F (20°C) and
the measured tire pressure is 27 psi (186 kPa), a tempera-
ture drop to 20°F (-7°C) will decrease the tire pressure to
approximately 23 psi (158 kPa). This tire pressure is suffi-
ciently low enough to urn ON the TPM Telltale Light.
Driving the vehicle may cause the tire pressure to rise to
approximately 27 psi (186 kPa), but the TPM Telltale Light
will still be ON. In this situation, the TPM Telltale Light
will turn OFF only after the tires are inflated to the
vehicle’s recommended cold placard pressure value.
CAUTION!
•The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system op-
eration or sensor damage may result when using
replacement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage.
(Continued)
CAUTION! (Continued)
•Using aftermarket tire sealants may cause the Tire
Pressure Monitoring System (TPMS) sensor to become
inoperable. After using an aftermarket tire sealant it is
recommended that you take your vehicle to an autho-
rized dealer to have your sensor function checked.
• After inspecting or adjusting the tire pressure always
reinstall the valve stem cap. This will prevent mois-
ture and dirt from entering the valve stem, which
could damage the TPMS sensor.
NOTE:
• The TPMS is not intended to replace normal tire care and
maintenance or to provide warning of a tire failure or
condition.
• The TPMS should not be used as a tire pressure gauge
while adjusting your tire pressure.
• Driving on a significantly under-inflated tire causes the
tire to overheat and can lead to tire failure. Under-
inflation also reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and stopping
ability.
232 STARTING AND OPERATING

FUEL REQUIREMENTS
8.4L Engine
The 8.4L engine is 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 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.
Gasoline/Oxygenate Blends
Some fuel suppliers blend unleaded gasoline with oxygen-
ates such as ethanol.
CAUTION!
DO NOT use gasoline containing methanol or gasoline
containing more than 10% ethanol (E-10). Use of these
blends may result in starting and drivability problems,
damage critical fuel system components, cause emis-
sions to exceed the applicable standard, and/or cause
the “Malfunction Indicator Light” to illuminate. Please
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