2011 Acura MDX fuel cap

Onboard Refueling Vapor
Recovery
The onboard refueling vapor
recovery (ORVR) system captures
the fuel vapors during refueling. The
vapors are adsorbed in a canister
filled with activated carbon. While
driving, the fuel vapors are drawn
into the engine and burned off.
Exhaust Emissions Controls
The exhaust emissions controls
include four systems: PGM-FI,
ignition timing control, exhaust gas
recirculation, and three way catalytic
converter. These four systems work
together to control the engine's
combustion and minimize the
amount of HC, CO, and NOx that
come out the tailpipe. The exhaust
emissions control systems are
separate from the crankcase and
evaporative emissions control
systems.
PGM-FI SystemThe PGM-FI system uses sequential
multiport fuel injection. It has three
subsystems: air intake, engine
control, and fuel control. The
powertrain control module (PCM)
uses various sensors to determine
how much air is going into the
engine. It then controls how much
fuel to inject under all operating
conditions.Ignition Timing Control SystemThis system constantly adjusts the
ignition timing, reducing the amount
of HC, CO, and NOx produced.Exhaust Gas Recirculation (EGR)SystemThe exhaust gas recirculation (EGR)
system takes some of the exhaust
gas and routes it back into the intake
manifold. Adding exhaust gas to the
air/fuel mixture reduces the amount
of NOx produced when the fuel is
burned.
Three Way Catalytic ConverterThe three way catalytic converter is
in the exhaust system. Through
chemical reactions, it converts HC,
CO, and NOx in the engine's exhaust
to carbon dioxide (CO
2), nitrogen
(N
2), and water vapor.
Replacement Parts
The emissions control systems are
designed and certified to work
together in reducing emissions to
levels that comply with the Clean Air
Act. To make sure the emissions
remain low, you should use only new
Acura replacement parts or their
equivalent for repairs. Using lower
quality parts may increase the
emissions from your vehicle.
The emissions control systems are
covered by warranties separate from
the rest of your vehicle. Read your
warranty manual for more
information.
Emissions Controls
581
Technical Information
10/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

Emergency Brake
......................
163
Emergency Flashers
..................
131
Emergency Towing
....................
566
Emissions Controls
....................
580
Emissions Testing
......................
583
Engine Adding Engine Coolant
...........
514
Check Starting System
............
437
Coolant Temperature Gauge
....
76
If it Won't Start
........................
551
Malfunction Indicator Lamp
.............................
67, 557
Oil Life Indicator
.....................
501
Oil Pressure Indicator
.......
67, 556
Oil, What Kind to Use
.............
511
Overheating
............................
554
Specifications
..........................
573
Speed Limiter
..........................
440
Starting
...................................
436
Engine Coolant
..........................
514
Ethanol in Gasoline
....................
418
Evaporative Emissions Controls
..................................
580
Exhaust Fumes
............................
60
Exhaust Gas Recirculation System
...................................
581 Expectant Mothers, Use of Seat
Belts by
....................................
19
F
Fan, Interior
...............................
183
Features
.....................................
179
Filters Dust and Pollen
.......................
528
Oil
...........................................
512
Flashers, Hazard Warning
.........
131
Flat Tire, Changing a
.................
545
Floor Mats
.................................
529
Fluids
Automatic Transmission
.........
517
Brake
......................................
519
Location
..................................
509
Power Steering
........................
520
Windshield Washer
.................
516
FM Stereo Radio Reception
................................
300
Fog Lights
..................................
129
Folding the Second Seat
.............
152
Folding the Third Seat
...............
153
Four-way Flashers
......................
131 Front Airbags
.........................
10, 29
Front Seat
..................................
148
Adjusting
.................................
148
Air Ventilation
.........................
157
Heaters
...................................
156
Fuel
............................................
418
Economy
.................................
423
Fill Door and Cap
....................
419
Gauge
......................................
76
Low Fuel Indicator
...................
75
Octane Requirement
...............
418
Opening the Fuel Fill Door
Manually
.............................
566
Reserve Indicator
.....................
75
Tank, Filling the
......................
419
Tighten Fuel Cap
....................
420
Fuel Economy
............................
423
Fuses, Checking the
..................
560
G
Gas Mileage, Improving
.............
424
Gasoline
.....................................
418
Gauge
......................................
76
Low Fuel Indicator
...................
75
IndexIV10/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu

Gasoline:
Premium unleaded gasoline,
pump octane number of 91 or
higher.
Fuel Tank Capacity:
21.00 US gal (79.5 L)
Recommended Engine Oil:
API Premium grade 5W-20
detergent oil (see page 511).
Oil change capacity (including
filter):
4.5 US qt (4.3 L)
Automatic Transmission Fluid:
Acura ATF DW-1 (automatic
transmission fluid) (see page 518).Rear Differential Fluid:
Use Acura All-Wheel Drive Fluid
(DPSF) only.
Capacity:
SH-AWD differential case
2.6 US qt (2.5 L)
Transfer Assembly Fluid:
SAE 90 or SAE 80W-90 viscosity
hypoid gear oil, API service
classified GL4 or GL5 only.
Power Steering Fluid:
Acura Power Steering Fluid
preferred, or another brand of
power steering fluid as a
temporary replacement. Do not
use ATF (see page 520).Brake Fluid:
Honda Heavy Duty Brake Fluid
DOT 3 preferred, or a DOT 3 or
DOT 4 brake fluid as a temporary
replacement (see page 519).
Tire Pressure (measured cold):
Front/Rear:
32 psi (220 kPa, 2.2 kgf/cm
2)
Compact Spare Tire: 60 psi (420 kPa, 4.2 kgf/cm2)
Service Information Summary10/06/29 11:59:04 11 ACURA MDX MMC North America Owner's M 50 31STX640 enu