2010 SUBARU LEGACY spark plugs

Maintenance schedule....................................... 11-3
Maintenance precautions ................................... 11-3
Before checking or servicing in the engine compartment .................................................... 11-4
When checking or servicing in the engine compartment (2.5 L non-turbo models) .. ........... 11-4
When checking or servicing in the engine compartment while the engine is running .......... 11-5
Maintenance tips ................................................ 11-5
Removing and reinstalling clips .......................... 11-5
Removing air intake duct .................................... 11-7
Pulling off the fender lining ................................ 11-7
Engine hood ....................................................... 11-7
Engine compartment overview .......................... 11-9
2.5 L non-turbo models ...................................... 11-9
2.5 L turbo models ........................................... 11-10
3.6 L models .................................................... 11-11
Engine oil .......................................................... 11-12
Checking the oil level ....................................... 11-12
Changing the oil and oil filter ............................ 11-14
Recommended grade and viscosity .................. 11-16
Recommended grade and viscosity under severe driving conditions .......................................... 11-17
Cooling system ................................................ 11-17
Cooling fan, hose and connections ................... 11-17
Engine coolant ................................................. 11-18
Air cleaner element .......................................... 11-20
Replacing the air cleaner element ..................... 11-21
Spark plugs ...................................................... 11-22
Recommended spark plugs .............................. 11-22 Drive belts
........................................................ 11-23
Manual transmission oil .................................. 11-23
Checking the oil level ...................................... 11-23
Recommended grade and viscosity .................. 11-24
Automatic transmission fluid .......................... 11-24
Checking the fluid level .................................... 11-24
Recommended fluid ......................................... 11-25
Continuously variable transmission fluid ...... 11-26
Front differential gear oil (AT and CVT models) .......................................................... 11-26
Checking the oil level ...................................... 11-26
Recommended grade and viscosity .................. 11-27
Rear differential gear oil .................................. 11-27
Checking the gear oil level ............................... 11-27
Recommended grade and viscosity .................. 11-28
Power steering fluid ........................................ 11-29
Checking the fluid level .................................... 11-29
Recommended fluid ......................................... 11-30
Brake fluid ........................................................ 11-30
Checking the fluid level .................................... 11-30
Recommended brake fluid ............................... 11-31
Clutch fluid (MT models) ................................. 11-31
Checking the fluid level .................................... 11-31
Recommended clutch fluid ............................... 11-32
Brake booster .................................................. 11-32
Brake pedal ...................................................... 11-33
Checking the brake pedal free play .................. 11-33
Checking the brake pedal reserve distance....... 11-33 Maintenance and service
11

11-22Maintenance and service
!Turbo models
1. Unsnap the two clamps holding the air
cleaner case cover.
2. Open the air cleaner case cover and
remove the air cleaner element. 3. Clean the inside of the air cleaner
cover and case with a damp cloth and
install a new air cleaner element.
4. Snap the two clamps on the air cleaner
case cover.
Spark plugs
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 L non-turbo models: SIFR6A11 (NGK)
2.5 L turbo models: SILFR6B8 (NGK)
3.6 L models: SILFR6C11 (NGK)

&Engine
Engine model EJ253
(2.5 L, SOHC, non-turbo) EJ255
(2.5 L, DOHC, turbo) EZ36D
(3.6 L, 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) 222 (3,630)
Bore 6Stroke in (mm) 3.92 63.11 (99.5 679.0) 3.62 63.59 (92.0 691.0)
Compression ratio 10.0 : 1 8.4 : 1 10.5 : 1
Firing order 1– 3–2– 4 1
– 6– 3–2 – 5–4
& Electrical system
Battery type and capacity (5HR) 75D23R (12V-52AH)
Alternator 2.5 L models 12V-110A
3.6 L models 12V-130A
Spark plugs 2.5 L non-turbo models SIFR6A11 (NGK)
2.5 L turbo models SILFR6B8 (NGK)
3.6 L models SILFR6C11 (NGK)Specifications
12-3
– CONTINUED –

14-8Index
P Parking ..................................................................... 7-33
Brake ................................................................... 7-34
Tips...................................................................... 7-37
Periodic inspections ..................................................... 8-4
Petrol fuel ................................................................... 7-2
Pocket ........................................................................ 6-8
Power Door locking switch .................................................. 2-7
Seat ....................................................................... 1-4
Steering ................................................................ 7-23
Steering fluid ........................................................ 11-29
Window ................................................................ 2-21
Precautions against vehicle modification ............... 1-24, 1-64
Preparing to drive ........................................................ 7-7
Printed antenna ........................................................... 5-2
RRear Combination lights ................................................. 11-54
Differential gear oil ................................................ 11-27
Gate ............................................................. 2-27, 9-19
Turn signal light .................................................... 11-54
Rear seat .................................................................... 1-7
Folding down ........................................................... 1-8
Reclining ................................................................. 1-8
Rear view camera ...................................................... 6-19
Rear window Defogger ............................................................... 3-34
Wiper and washer switch ........................................ 3-34
Wiper blades ........................................................ 11-45 Recommended
Automatic transmission fluid ................................... 11-25
Brake fluid ........................................................... 11-31
Clutch fluid .......................................................... 11-32
Engine oil ................................................... 11-16, 11-17
Front differential gear oil ........................................ 11-27
Manual transmission oil ......................................... 11-24
Power steering fluid .............................................. 11-30
Rear differential gear oil ........................................ 11-28
Spark plugs ......................................................... 11-22
Refueling .................................................................... 7-3
Remote engine start system ........................................ 7-10
Remote keyless entry system ....................................... 2-8
Replacement Brake pad and lining ............................................. 11-34
Wiper blades ........................................................ 11-43
Replacing Air cleaner element ............................................... 11-21
Battery (remote engine start transmitter) .................... 7-14
Battery (remote keyless entry system) ....................... 2-11
Lost transmitters (remote keyless entry system) ......... 2-12
Replacing bulbs ....................................................... 11-50
Back-up light (Legacy) .......................................... 11-54
Brake light (Outback) ............................................ 11-55
Brake/Tail and rear side marker light (Legacy) .......... 11-54
Cargo area light ................................................... 11-60
Dome light ........................................................... 11-58
Door step light ..................................................... 11-60
Front fog light ....................................................... 11-53
Front position light ................................................ 11-53
Front turn signal light ............................................ 11-53

Headlight............................................................. 11-50
License plate light ................................................. 11-57
Map light .............................................................. 11-59
Rear combination light ........................................... 11-54
Tail and rear side marker light (Outback) .................. 11-55
Tail/Back-up light (Outback) .................................... 11-56
Trunk light ............................................................ 11-60
Vanity mirror light .................................................. 11-59
Rocking the vehicle .................................................... 8-11
Roof rails with integrated cross bars ............................. 8-14
S Safety Precautions when driving ............................................. 4
Symbol ...................................................................... 2
Warnings ................................................................... 2
Seat
Fabric ................................................................... 10-5
Front ...................................................................... 1-2
Heater .................................................................... 1-6
Height adjustment .................................................... 1-4
Rear ....................................................................... 1-7
Seatbelt ................................................................. 4, 1-12
Fastening .............................................................. 1-15
Maintenance .......................................................... 1-22
Pretensioners ........................................................ 1-22
Safety tips ............................................................. 1-12
Warning light and chime ................................. 1-14, 3-10
Security Alarm system ........................................................ 2-16
ID plate ................................................................... 2-3 Immobilizer
............................................................. 2-3
Indicator light .................................................. 2-4, 3-22
Shock sensors ....................................................... 2-19
Select lever ............................................................... 7-19
Position indicator .................................................... 3-22
Shift lock function ................................................... 7-20
Shock sensors ........................................................... 2-19
Shopping bag hook ..................................................... 6-14
Snow tires ....................................................... 8-10, 11-35
Snowy and icy roads ................................................... 8-9
Sounding a panic alarm .............................................. 2-10
Spark plugs ............................................................. 11-22
Specifications ............................................................. 12-2
Speedometer .............................................................. 3-6
SRS Curtain airbag ........................................................ 1-53
Frontal airbag ......................................................... 1-43
Side airbag ............................................................ 1-53
SRS airbag (Supplemental Restraint System airbag)... 4, 1-38
SRS airbag system Monitors ................................................................ 1-62
Servicing ............................................................... 1-63
Warning light .......................................................... 3-11
Starting the engine ...................................................... 7-8
State emission testing (U.S. only) .................................. 7-6
Steering wheel Power ................................................................... 7-23
Tilt/telescopic ......................................................... 3-38
Stopping the engine .................................................... 7-10
Storage compartment ................................................... 6-5
Sun shade ................................................................. 2-30 Index
14-9