2012 Acura RDX 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 three systems: PGM-FI,
ignition timing control, and three
way catalytic converter. These three
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.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 Controls48811/06/16 17:42:51 12 ACURA RDX MMC North America Owner's M 50 31STK650 enu

Engine Number
.........................
479
Ethanol in Gasoline
....................
352
Evaporative Emissions Controls
..................................
487
Exhaust Emissions Controls
......
488
Exhaust Fumes
............................
57
Expectant Mothers, Use of Seat Belts by
....................................
18
F
Fan, Interior
...............................
166
Features
.....................................
163
Filters
Dust and Pollen
.......................
439
Oil
...........................................
422
Flashers, Hazard Warning
.........
121
Flat Tire, Changing a
.................
455
Floor Mats
.................................
438
Fluids Automatic Transmission
.........
427
Brake
......................................
429
Location
..................................
419
Power Steering
........................
430
Windshield Washer
.................
426 FM/AM Radio Reception
...........
287
Fog Lights
..................................
119
Folding the Rear Seats Down
.....
138
Four-way Flashers
......................
121
Front Airbags
.........................
10, 26
Front Door Pockets
....................
155
Front Seat Heaters
...................................
141
Front Seat Power Adjustments
...........................
134
Fuel
............................................
352
Economy
.................................
358
Fill Door and Cap
....................
354
Gauge
......................................
73
Low Fuel Indicator
...................
68
Octane Requirement
...............
352
Reserve Indicator
.....................
68
Tank, Filling the
......................
354
Tighten Fuel Cap
....................
355
Fuel Economy
............................
358
Fuses, Checking the
..................
470
G
Gas Mileage, Improving
.............
360 Gasoline
.....................................
352
Low Fuel Indicator
...................
68
Octane Requirement
...............
352
Tank, Refueling
.......................
354
Gas Station Procedures
..............
354
Gauges Fuel
..........................................
73
Speedometer
............................
73
Tachometer
..............................
73
Turbo Boost Meter
..................
73
Gearshift Lever Positions Automatic
Transmission
...............
376, 377
Glove Box
..................................
155
Gross Axle Weight Rating (GAWR)
.................................
398
Gross Vehicle Weight Rating (GVWR)
.................................
398
H
HandsFreeLink
®........................
306
Hazard Warning Flashers
..........
121
Headlights Aiming
....................................
431
IndexIV11/06/16 17:42:51 12 ACURA RDX MMC North America Owner's M 50 31STK650 enu

Gasoline:
Premium unleaded gasoline, pump
octane number of 91 or higher.Avoid driving with an extremely low
fuel level. Running out of fuel could
cause the engine to misfire, damaging
the catalytic converter.
Fuel Tank Capacity:18.0 US gal (68 L)
Required Engine Oil;
Always use Mobil 1
®5W-30 or an
equivalent oil that meets the
Acura HTO-06 standard.
Oil change capacity (including
filter):
5.0 US qt (4.7 L) Automatic Transmission Fluid:
Acura ATF DW-1
(automatic transmission fluid)
(see page 427).
On models with SH-AWDRear Differential Fluid:
Use Acura All-Wheel Drive Fluid
(DPSF) only.
Capacity:
SH-AWD differential case
2.67 US qt (2.53 L)On models with SH-AWDTransfer 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 430).
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 429).
Tire Pressure (measured cold):
Front/Rear:
32 psi (220 kPa , 2.2 kgf/cm
2)
Spare Tire Pressure:
60 psi (420 kPa , 4.2 kgf/cm2)
Service Information Summary11/06/16 17:42:51 12 ACURA RDX MMC North America Owner's M 50 31STK650 enu