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The f ollowing f actors can lower your
vehicle’s f uel economy:
Aggressive driving (hard
acceleration and braking)
Excessive idling, accelerating and
braking in stop-and-go traf f ic
Cold engine operation (engines
aremoreefficientwhenwarmed
up)
Driving with a heavy load or the
air conditioner running
Improperly inf lated tires
A properly maintained vehicle
maximizes f uel economy. Poor
maintenance can signif icantly reduce
f uel economy. Always maintain your
vehicle according to the maintenance
messages displayed on the
inf ormation display (see on page ).
For example: An under-inf lated tire increases
‘‘rolling resistance,’’ which reduces
f uel economy.
It puts a heavier
load on the engine, increasing f uel
consumption. In
particular, a build-up of snow or
mud on your vehicle’s underside
adds weight and rolling resistance.
Frequent cleaning helps your f uel
economy.
Rapid
acceleration, abrupt cornering,
and hard braking increase fuel
consumption. Aerodynamic drag has a big ef f ect
on f uel mileage at speeds above 45
mph (75 km/h). Reduce your
speed and you reduce the drag.
Trailers, car top carriers, roof
racks and bike racks are also big
contributors to increased drag.
If your vehicle has a
manual transmission, you can
boost your f uel economy by up
shif ting as early as possible. Idling
results in 0 miles per gallon.
Combine several short trips into
one. A warmed-up engine is more
f uel ef f icient than a cold one. The A/C
puts an extra load on the engine
which makes it use more f uel. Use
the f resh-air ventilation when
possible.
245
Fuel Economy Factors
Improving Fuel Economy
Owner’s
Maintenance Checks Use the recommended viscosity
motor oil, displaying the A PI
Certif ication Seal (see page
).
Maintain proper tire inf lation
A void carrying excess weight in
your vehicle
K eep your vehicle clean
Drive moderately Observe the speed limit
Always drive in the highest gear
possible
Avoid excessive idling
Plan and combine trips
Minimize the use of the air
conditioning system
248
Fuel Economy
Vehicle Maint enance
Drive Ef f icient ly
186
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2008 Ridgeline
Oil is a major contributor to your
engine’s perf ormance and longevity.
Always use a premium-grade 5W-20
detergent oil displaying the API
Certif ication Seal. This seal indicates
the oil is energy conserving, and that
it meets the American Petroleum
Institute’s latest requirements.Honda Motor Oil is the pref erred
5W-20 lubricant f or your vehicle. It is
highly recommended that you use
Honda Motor Oil in your vehicle f or
optimum engine protection. Make
sure the API Certif ication Seal says
‘‘For Gasoline Engines.’’
The oil viscosity or weight is
provided on the container’s label.
5W-20 oil is f ormulated f or year-
round protection of your vehicle to
improve cold weather starting and
f uel economy.
Unscrew and remove the engine oil
fill cap on the valve cover. Pour in
the oil slowly and caref ully so you do
not spill any. Clean up any spills
immediately. Spilled oil could
damage components in the engine
compartment. Reinstall the engine
oil f ill cap, and tighten it securely.
Wait a f ew minutes, and recheck the
oil level on the engine oil dipstick.
Do not f ill above the upper mark; you
could damage the engine. Recommended Engine Oil
A dding Engine Oil
248
API CERTIFICATION SEAL
Ambient Temperature
ENGINE OIL FILL CAP
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The transf er assembly should be
drained and ref illed with new f luid
when this service is indicated by a
maintenance message on the
inf ormation display.
Always use Hypoid gear oil GL4 or
GL5 with a viscosity of SAE 90 or
80W-90, and have your dealer
replace the transfer assembly fluid.Check the brake f luid level in the
reservoir monthly.
Replace the brake f luid according to
the time recommendation in the
maintenance minder schedule.
Brake f luid marked DOT 5 is not
compatible with your vehicle’s
braking system and can cause
extensive damage.
Using any non-Honda brake f luid can
cause corrosion and decrease the lif e
of the system. Have the brake
system f lushed and ref illed with
Honda Heavy Duty Brake Fluid
DOT 3 as soon as possible.
Always use Honda Heavy Duty
Brake Fluid DOT 3. If it is not
available, you should use only DOT 3
or DOT 4 f luid, f rom a sealed
container, as a temporary
replacement.
The f luid level should be between
theMINandMAXmarksontheside
of the reservoir. If the level is at or
below the MIN mark, your brake
system needs attention. Have the
brake system inspected f or leaks or
worn brake pads.
Brake Fluid
Transf er Assembly Fluid
Transf er A ssembly Fluid, Brake Fluid
Maint enance
255
MAX
MIN
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.......................
Label, Certif ication .302
.................
Lane Change, Signaling .76
..................
Lap/Shoulder Belts .14,19
...........................
Light Control Dial .76
Lights
....................
Bulb Replacement .257
.......................................
Indicator .66
.......................................
Interior .120
.........................................
Parking .76
..................................
Turn Signal .76
............................
Load Limits .191,217
......
LOCK (Ignition Key Position) .82
Locks
.......
Anti-thef t Steering Column .82
............................
Fuel Fill Door .181
..................................
Glove Box .117
...............................
In-Bed Trunk .96
....................
Lockout Prevention .83
.................................
Power Door .83
........................
Low Coolant Level .184
.........................
Low Fuel Indicator .65
...
Low Oil Pressure Indicator .62,290
Lubricant Specif ications
..................................
Chart .304,305 ...........
Luggage, Storing (Cargo) .190
..................................
Maintenance .237
Owner’s Maintenance ...................................
Checks .245
................................
Minder .239-246
.........................
Minder Indicator .67
..........................................
Saf ety .238
.
Malf unction Indicator Lamp .62,291
..............
Manual Seat Adjustments .99
...............................
Meters, Gauges .70
........................
Mirrors, Adjusting .113
...............
Modif ying Your Vehicle .189
.......................................
Moonroof .110
...................
Neutral Gear Position .203
..................
New Vehicle Break-in .180
...................
NOTICE, Explanation of .i
...............
Numbers, Identif ication .302 ...
Octane Requirement, Gasoline .180
.........................................
Odometer .70
....................
Of f -Highway Driving .232
...................
Of f -Road Precautions .233
Oil
........................
Change, How to .249
......................
Change, When to .239
......................
Checking Engine .184
...........................................
Filter .250
..............
Pressure Indicator .62,290
Selecting Proper Viscosity
......................................
Chart .248
...........
ON (Ignition Key Position) .82
............................
Outside Mirrors .113
....................
Overheating, Engine .288
....
Owner’s Maintenance Checks .245
.........................
Oxygenated Fuels .180
..............
Panel Brightness Control .78
........................
Park Gear Position .202
...........................................
Parking .211
...............................
Parking Brake .111
Index
N O
P
M
L
VI
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ÎÎÎ
CONT INUED
..
Three Way Catalytic Converter .314
....................................
Timing Belt .256
....................................
Tire Chains .271
.........
Tire, How to Change a Flat .277
.................................
Tire Labeling .308
Tire Pressure Monitoring
....................
System (TPMS) .208
Low Tire Pressure
...........................
Indicator .68,208
Required Federal ............................
Explanation .310
.......
Tire Pressure Monitor .68,209
..................
TPMS Indicator .68,209
...............................................
Tires .267
..............................
Air Pressure .268
.........................
Checking Wear .268
..........................
Compact Spare .276
....
DOT Tire Quality Grading .306
......................................
Inf lation .267
..................................
Inspection .268
..............................
Maintenance .269
...................................
Replacing .270
......................................
Rotating .269
...........................................
Snow .271
....................
Specif ications .271,305
................................
Tire Chains .271 ...................
Tools, Tire Changing .277
Towing
.....................................
A Trailer .220
................
Emergency Wrecker .298
.................................
Equipment .225
....
Equipment and Accessories .221
.............................
Weight Limit .217
.........................
Trailer Loading .219
.................
Trailer Towing Tips .229
.............
Transf er Assembly Fluid .255
Transmission
...............
Checking Fluid Level .253
...........................
Fluid Selection .254
..............
Identif ication Number .303
.............
Shif ting the Automatic .201
.....................................
Treadwear .306
.......................................
Trip Meter .71
..................................
Trunk, In-Bed .96
....................................
Turn Signals .76
Unexpected, Taking Care
..........................................
of the .275
..
Unif orm Tire Quality Grading .306
........................
Unleaded Gasoline .180 .......
Used Oil, How to Dispose of .250
............
WARNING, Explanation of .iii
.........
Warning Labels, Location of .54
..................
Warranty Coverages .319 ................................
Vanity Mirror .119
.........
Vehicle Capacity Load .191,304
......................
Vehicle Dimensions .304
....
Vehicle Identif ication Number .302
Vehicle Stability Assist (VSA)
....................................
System .215
........
VSA System Indicator .67,215
...
VSA Activation Indicator .67,215
.........................
VSA Of f Switch .216
.............................
Vehicle Storage .274
.....................................
Ventilation .127
.................................................
VIN .302
..................................
Viscosity, Oil .248
..................................
VTM-4 Lock .206
Index
W
V
U
INDEX
IX
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Service Inf ormation Summary
Gasoline: Tire Pressure (measured cold):
Fuel Tank Capacity:
Recommended Engine Oil:
Automatic Transmission Fluid:Power Steering Fluid:
Brake Fluid:
Rear Differential Fluid:
Transfer Assembly Fluid: 32 psi (220 kPa , 2.2 kgf/cm
)
Front/Rear:
Compact Spare Tire:
60 psi (420 kPa , 4.2 kgf/cm
)
22.01 US gal (83.3
)
API Premium grade 5W-20
detergent oil (see page ).
Oil change capacity (including
filter): 4.5 US qt (4.3
)
Honda ATF-Z1 (Automatic
Transmission Fluid) (see page ). Honda Power Steering Fluid
preferred, or another brand of
power steering fluid as a
temporary replacement. Do not
use ATF (see page ).
Honda Heavy Duty Brake Fluid
DOT 3 preferred, or a DOT 3 or
DOT 4 brake fluid as a temporary
replacement (see page ).
Honda VTM-4 Differential Fluid
(see page ).
SAE 90 or SAE 80W-90 viscosity
hypoid gear oil, API service
classified GL4 or GL5 only (see
page ).
Unleaded gasoline, pump octane
number of 87 or higher.
248
254 256
255
254
255
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