2008 SUBARU LEGACY spark plugs

Maintenance schedule....................................... 11-3
Maintenance precautions ................................... 11-3
Before checking or servicing in the engine compartment .................................................... 11-4
When you do checking or servicing in the engine compartment while the engine is running .......... 11-4
Engine hood ....................................................... 11-4
Engine compartment overview .......................... 11-6
2.5-liter non-turbo models ................................... 11-6
2.5-liter turbo models ......................................... 11-7
3.0-liter models .................................................. 11-8
Engine oil ............................................................ 11-9
Checking the oil level ......................................... 11-9
Changing the oil and oil filter ............................ 11-10
Recommended grade and viscosity .................. 11-12
Recommended grade and viscosity under severe driving conditions .......................................... 11-13
Cooling system ................................................ 11-14
Hose and connections ...................................... 11-14
Engine coolant ................................................. 11-14
Air cleaner element .......................................... 11-17
Replacing the air cleaner element ..................... 11-18
Spark plugs ...................................................... 11-20
Recommended spark plugs .............................. 11-20
Drive belts ........................................................ 11-21
2.5-liter models ................................................ 11-21
3.0-liter models ................................................ 11-21
Manual transmission oil .................................. 11-21
Checking the oil level ....................................... 11-21
Recommended grade and viscosity .................. 11-22Automatic transmission fluid
.......................... 11-23
Checking the fluid level .................................... 11-23
Recommended fluid ......................................... 11-24
Front differential gear oil (AT models) ........... 11-24
Checking the oil level ...................................... 11-24
Recommended grade and viscosity .................. 11-25
Rear differential gear oil .................................. 11-25
Checking the gear oil level ............................... 11-25
Recommended grade and viscosity .................. 11-27
Power steering fluid ........................................ 11-28
Checking the fluid level .................................... 11-28
Recommended fluid ......................................... 11-28
Brake fluid ........................................................ 11-29
Checking the fluid level .................................... 11-29
Recommended brake fluid ............................... 11-29
Clutch fluid (MT models) ................................. 11-30
Checking the fluid level .................................... 11-30
Recommended clutch fluid ............................... 11-30
Brake booster .................................................. 11-31
Brake pedal ...................................................... 11-31
Checking the brake pedal free play .................. 11-31
Checking the brake pedal reserve distance....... 11-31
Clutch pedal (MT models) ............................... 11-32
Checking the clutch function ............................ 11-32
Checking the clutch pedal free play .................. 11-32
Replacement of brake pad and lining ............ 11-32
Breaking-in of new brake pads and linings ....... 11-33
Parking brake stroke ....................................... 11-33
Tires and wheels .............................................. 11-34
Types of tires ................................................... 11-34
Maintenance and service
11

11-20Maintenance and service
7. To install the air cleaner case cover,
insert the three projections on the air
cleaner case cover into the slits on the
air cleaner case and then snap the two
clamps on the air cleaner case cover. Spark plugs
CAUTION
. When disconnecting the spark
plug cables, always grasp the
spark plug cap, not the cables.
. Make sure the cables are re-
placed in the correct order.
It may be difficult to replace the spark
plugs. It is recommended that you have
the spark plugs replaced by your
SUBARU dealer.
The spark plugs should be replaced
according to the maintenance schedule
in the “Warranty and Maintenance Book-
let ”. &
Recommended spark plugs
2.5-liter non-turbo models: FR5AP-11 (NGK)
2.5-liter turbo models:
SILFR6A (NGK)
3.0-liter models: ILFR6B (NGK)

&Engine
Engine model EJ253
(2.5-liter, SOHC, non-turbo) EJ255
(2.5-liter, DOHC, turbo) EZ30D
(3.0-liter, DOHC, non-turbo)
Engine type Horizontally opposed, liquid cooled 4 cylinder,
4 stroke gasoline engine Horizontally opposed, liquid cooled 6 cylinder,
4 stroke gasoline engine
Displacement cu-in (cc) 150 (2,457) 183 (3,000)
Bore 6Stroke in (mm) 3.92 63.11 (99.5 679.0) 3.51 63.15 (89.2 680.0)
Compression ratio 10.0 : 1 8.4 : 1 10.7 : 1
Firing order 1– 3–2 – 4 1
–6– 3–2– 5–4
& Electrical system
Battery type and capacity (5HR) 2.5-liter models
MT 55D23L (12V-48AH)
AT 75D23L (12V-52AH)
3.0-liter models 75D23L (12V-52AH)
Alternator 12V-110A
Spark plugs 2.5-liter non-turbo models
FR5AP-11 (NGK)
2.5-liter turbo models SILFR6A (NGK)
3.0-liter models ILFR6B (NGK)Specifications
12-3
– CONTINUED –

Periodic inspections..................................................... 8-4
Power Door locking switch .................................................. 2-7
Seat ....................................................................... 1-4
Steering ................................................................ 7-33
Steering fluid ........................................................ 11-28
Windows ............................................................... 2-20
Precautions against vehicle modification ............... 1-27, 1-64
Preparing to drive ........................................................ 7-8
Printed antenna ........................................................... 5-2
R Rear Combination lights ................................................. 11-55
Gate ............................................................. 2-26, 9-18
Seats ..................................................................... 1-9
Viscous limited slip differential ................................. 7-33
Rear differential Gear oil ............................................................... 11-25
Rear seat Folding down ........................................................... 1-9
Rear window Defogger button ..................................................... 3-54
Wiper and washer switch ........................................ 3-52
Wiper blades ........................................................ 11-45
Recommended
Automatic transmission fluid ................................... 11-24
Brake fluid. ........................................................... 11-29
Clutch fluid ........................................................... 11-30
OIL grade and viscosity ...................... 11-12, 11-13, 11-22, 11-25, 11-27 Power steering fluid
.............................................. 11-28
Spark plugs ......................................................... 11-20
Remote engine start system ........................................ 7-11
Remote keyless entry system ....................................... 2-8
Replacement Brake pad and lining ............................................. 11-32
Wiper blades ........................................................ 11-43
Replacing Air cleaner element ............................................... 11-18
Battery (remote keyless entry system) ........................ 2-8
Lost transmitters (keyless entry system) .................... 2-12
Replacing bulbs ....................................................... 11-51
Backup light/Tail light ............................................ 11-57
Cargo area light ................................................... 11-60
Dome light ........................................................... 11-58
Door step light ..................................................... 11-59
Front fog light ....................................................... 11-54
Front turn signal light ............................................ 11-54
Headlight ............................................................. 11-52
High mount stop light ............................................ 11-60
License plate light ................................................. 11-57
Map light ............................................................. 11-59
Parking light ......................................................... 11-54
Rear combination light .......................................... 11-55
Trunk light ........................................................... 11-60
Vanity mirror light .................................................. 11-59
Rocking the vehicle .................................................... 8-13
Roof rail and crossbar ................................................. 8-15
S
S# PREP indicator light ............................................... 3-38 Index
14-7

14-8Index
Safety Precautions when driving ............................................. 4
Symbol ...................................................................... 2
Warnings ................................................................... 2
Seat Fabric ................................................................... 10-5
Heater .................................................................... 1-8
Memory function ...................................................... 1-5
Seat height adjustment ................................................. 1-4
Seatbelt ......................................................................... 4
Maintenance .......................................................... 1-23
Pretensioners ........................................................ 1-24
Safety tips ............................................................. 1-13
Warning light and chime ................................. 1-15, 3-29
Seatbelts .................................................................. 1-13
Security ID plate .......................................................... 2-3
Selector lever .................................................... 7-18, 7-25
Position indicator ................................................... 3-39
Shift lock release ............................................... 7-23, 7-29
Shift-up indicator light ................................................. 3-38
Shock sensors ........................................................... 2-19
Shopping bag hook .................................................... 6-11
SI-DRIVE mode ......................................................... 7-30
Snow tires ................................................................. 8-11
Snowy and icy roads .................................................... 8-9
Sounding a panic alarm .............................................. 2-10
Spark plugs .............................................................. 11-20
Specifications ............................................................ 12-2
Speedometer ....................................................... 3-6, 3-24
SPORT mode indicator light ........................................ 3-38 SRS
Curtain airbag ........................................................ 1-55
Frontal airbag ......................................................... 1-45
Side airbag ............................................................ 1-55
SRS airbag (Supplemental Restraint System airbag)... 4, 1-40
SRS airbag system Monitors ................................................................ 1-61
Servicing ............................................................... 1-63
Warning light .......................................................... 3-30
Starting the engine ...................................................... 7-9
State emission testing (U.S. only) .................................. 7-7
Steering wheel Power ................................................................... 7-33
Tilt/telescopic ......................................................... 3-58
Stopping the engine .................................................... 7-10
Storage compartment ................................................... 6-4
Stowage boxes .......................................................... 6-15
Sun shade ......................................................... 2-28, 2-30
Sun visors .................................................................. 6-3
Supplemental Restraint System airbag (SRS) ................ 1-40
Synthetic leather upholstery ......................................... 10-5
T
Tachometer ......................................................... 3-6, 3-26
Temperature gauge ...................................... 3-7, 3-12, 3-27
Temperature warning light (AT OIL TEMP) ..................... 3-32
Temporary spare tire .................................................... 9-2
Tie-down hooks .......................................................... 9-14
Tire Chains .................................................................. 8-13
Inspection ............................................................ 11-36