2021 RAM PROMASTER fuel cap

248SERVICING AND MAINTENANCE
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
Fuel Economy
Tread Wear
Ride Comfort And Vehicle Stability Safety
Both underinflation and overinflation 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.
Tread Wear
Improper cold tire inflation pressures can cause
abnormal wear patterns and reduced tread life,
resulting in the need for earlier tire
replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a
comfortable ride. Overinflation produces a
jarring and uncomfortable ride.
WARNING!
Overloading of your tires is dangerous.
Overloading can cause tire failure, affect
vehicle handling, and increase your stopping
distance. Use tires of the recommended load
capacity for your vehicle. Never overload
them.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.
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
recommended cold tire inflation pressure.

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268TECHNICAL SPECIFICATIONS
FLUID CAPACITIES
ENGINE FLUIDS AND LUBRICANTS
US Metric
Fuel (Approximate) 24 Gallons90 Liters
Engine Oil With Filter
3.6L Engine 6 Quarts5.6 Liters
Cooling System
3.6L Engine 10.5 Quarts10 Liters
Component Fluid, Lubricant, or Genuine Part
Engine CoolantWe recommend you use Mopar Antifreeze/Coolant 10 Year/150,000 Mile (240,000 km) Formula
OAT (Organic Additive Technology) meeting the requirements of FCA Material Standard MS.90032.
Engine Oil We recommend you use API Certified SAE 5W-20 Engine Oil, meeting the requirements of FCA
Material Standard MS-6395 such as Mopar, Pennzoil, and Shell Helix. Refer to your engine oil filler
cap for correct SAE grade.
Engine Oil Filter We recommend you use Mopar Engine Oil Filters.
Fuel Selection 87 Octane (R+M)/2 Method, 0-15% Ethanol.

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276 C
Camera, Rear
.................................................. 73Capacities, Fluid............................................ 268Caps, Filler Fuel............................................................. 75Oil (Engine)................................................ 215Power Steering............................................ 67Radiator (Coolant Pressure)...................... 224Car Washes................................................... 261Carbon Monoxide Warning............................ 189Cargo Area Cover............................................. 41Cargo Compartment........................................ 41Cargo Light...................................................... 28Certification Label........................................... 76Change Oil Indicator........................................ 45Changing A Flat Tire....................................... 190Chart, Tire Sizing............................................ 241Check Engine Light
(Malfunction Indicator Light)........................... 56Checking Your Vehicle For Safety.................. 186Checks, Safety............................................... 186Child Restraint............................................... 181Child RestraintsBooster Seats............................................ 184Child Seat Installation............................... 186Infant And Child Restraints....................... 183Older Children And Child Restraints..........183Clean Air Gasoline......................................... 266CleaningWheels...................................................... 255
Climate Control................................................ 31Manual........................................................ 31Rear............................................................. 34Cold Weather Operation.................................. 57Compact Spare Tire...................................... 253Contract, Service.......................................... 272Cooling Pressure Cap (Radiator Cap)............ 224Cooling System............................................. 223Adding Coolant (Antifreeze)...................... 224Coolant Level................................... 223, 225Cooling Capacity....................................... 268Disposal Of Used Coolant......................... 225Drain, Flush, And Refill............................. 223Inspection................................................. 225Points To Remember................................ 225Pressure Cap............................................ 224Radiator Cap............................................ 224Selection Of Coolant (Antifreeze)..... 223, 268Corrosion Protection..................................... 260Cruise Control (Speed Control)........................ 67Cruise Light...................................................... 54Cupholders................................................... 263Customer Assistance.................................... 271Customer Programmable Features.................. 89Cybersecurity................................................... 88
D
Dealer Service.............................................. 218Defroster, Windshield................................... 187Deleting A Phone.......................................... 117
Diagnostic System, Onboard............................55Dimmer Control Switch....................................29Dimmer SwitchHeadlight.....................................................26DipsticksAutomatic Transmission........................... 227Oil (Engine)............................................... 216Power Steering............................................67Disable Vehicle Towing................................. 209Disconnecting............................................... 117DisposalAntifreeze (Engine Coolant)...................... 225Disturb.......................................................... 120Door Ajar..........................................................49Door Ajar Light.................................................49Door Locks.......................................................14Automatic....................................................15Doors...............................................................14Driver’s Seat Back Tilt......................................15DrivingThrough Flowing, Rising, Or Shallow Standing Water
..........................86
E
Electric Brake Control System....................... 150Electric Remote Mirrors...................................24Electrical Power Outlets...................................37Electronic Speed Control (Cruise Control)........67Electronic Stability Control (ESC)................... 150Electronic Throttle Control Warning Light.........49

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277
Emergency, In Case Of Freeing Vehicle When Stuck
...................... 208Jacking...................................................... 190Jump Starting............................................ 203Emission Control System Maintenance........... 56Engine........................................................... 215Air Cleaner................................................. 219Block Heater............................................... 58Break-In Recommendations........................ 58Checking Oil Level..................................... 216Compartment............................................ 215Compartment Identification...................... 215Coolant (Antifreeze)......................... 223, 268Cooling...................................................... 223Exhaust Gas Caution................................. 189Fails To Start............................................... 57Flooded, Starting......................................... 57Fuel Requirements.......................... 265, 268Jump Starting............................................ 203Oil.................................................... 218, 268Oil Filler Cap.............................................. 215Oil Filter..................................................... 219Oil Selection.................................... 218, 268Oil Synthetic.............................................. 218Overheating............................................... 206Starting....................................................... 57Enhanced Accident Response Feature..........210Entry System, Illuminated................................ 30
Ethanol......................................................... 266Exhaust Gas Cautions................................... 189Exhaust System................................... 189, 221Exterior Lights.........................................26, 188
F
FiltersAir Cleaner
................................................ 219Air Conditioning..................................35, 220Engine Oil........................................ 219, 268Engine Oil Disposal................................... 218FlashersHazard Warning........................................ 190Turn Signals.......................................54, 188Flat Tire Changing................................ 240, 253Flat Tire Stowage................................. 240, 253Flooded Engine Starting................................... 57Fluid Capacities............................................ 268Fluid Leaks................................................... 189Fluid Level ChecksAutomatic Transmission........................... 227Brake........................................................ 226Cooling System......................................... 223Engine Oil................................................. 216Power Steering............................................ 67Fog Lights........................................................ 27Fold-Flat Seats................................................. 15Forward Collision Warning............................ 159
Four-Way Hazard Flasher.............................. 190Freeing A Stuck Vehicle................................. 208Fuel............................................................... 265Additives................................................... 266Clean Air................................................... 266Ethanol..................................................... 266Filler Cap (Gas Cap).....................................75Gasoline................................................... 265Materials Added....................................... 266Methanol.................................................. 266Octane Rating.................................. 265, 268Requirements.................................. 265, 268Tank Capacity........................................... 268Fuses............................................................ 228
G
Gas Cap (Fuel Filler Cap)...........................75, 76Gasoline, Clean Air........................................ 266Gasoline, Reformulated................................ 266Gear Ranges....................................................62Gear Selector Override.................................. 207Glass Cleaning.............................................. 263Gross Axle Weight Rating.......................... 76, 78Gross Vehicle Weight Rating.....................76, 78GuideBody Builders................................................. 7GVWR...............................................................7611

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279
Security Alarm
............................................. 50Service...................................................... 235Tire Pressure Monitoring (TPMS)............... 161Traction Control......................................... 152Turn Signals................................ 26, 54, 188Warning Instrument Cluster Descriptions..................................... 49, 54Loading Vehicle........................................ 76, 77Capacities................................................... 77Tires.......................................................... 245LocksAutomatic Door.................................... 14, 15Low Tire Pressure System............................. 161Lubrication, Body........................................... 221Lug Nuts/Bolts.............................................. 264
M
Maintenance Free Battery............................. 217Maintenance Schedule.................................. 211Malfunction Indicator Light (Check Engine)..... 52ManualService...................................................... 274Methanol....................................................... 266Mirrors............................................................. 23Electric Remote........................................... 24Exterior Folding........................................... 24Heated........................................................ 25Outside........................................................ 24Rearview..................................................... 23
Modifications/AlterationsVehicle........................................................... 7Monitor, Tire Pressure System...................... 161Mopar Parts.................................................. 273MP3 Control..................................................... 37Multi-Function Control Lever............................ 26
N
New Vehicle Break-In Period............................ 58
O
Occupant Restraints..................................... 164Octane Rating, Gasoline (Fuel)..................... 265Oil Change Indicator........................................ 45Reset........................................................... 45Oil Filter, Change.......................................... 219Oil Filter, Selection........................................ 219Oil Pressure Light............................................. 50Oil, Engine............................................ 218, 268Capacity.................................................... 268Checking................................................... 216Dipstick.................................................... 216Disposal................................................... 218Filter................................................ 219, 268Filter Disposal........................................... 218Identification Logo.................................... 218Materials Added To.................................. 218Pressure Warning Light............................... 50Recommendation............................ 218, 268
Synthetic................................................... 218Viscosity.................................................... 268Onboard Diagnostic System.............................55Operating Precautions.....................................55Operator ManualOwner's Manual........................................ 274Outside Rearview Mirrors.......................... 23, 24Overheating, Engine...................................... 206
P
Paint Care..................................................... 260Parking Brake..................................................59ParkSense System, Rear..................................69Passing Light....................................................26Pets............................................................... 187Phone Mode.................................................. 112Placard, Tire And Loading Information.......... 245PowerMirrors.........................................................24Outlet (Auxiliary Electrical Outlet).................37Steering................................................66, 67Windows......................................................39Power Steering Fluid..................................... 270Pregnant Women And Seat Belts.................. 170Preparation For Jacking....................... 190, 191
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