2003 SUBARU LEGACY fuel

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Maintenance and service11-7
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Engine compartment overview
2.5 liter models
HBB036BB
1 Manual transmission oil level
gauge (MT) (page 11-23) or
Differential gear oil level gauge
(AT) (page 11-26)
2 Air cleaner element (page 11-18)
3 Clutch fluid reservoir (page 11-32)
4 Automatic transmission fluidlevel gauge (page 11-24)
5 Brake fluid reservoir (page 11-30)
6 Fuel filter 7
Windshield washer tank (page 11-47)
8 Fuse box (page 11-52)
9 Battery (page 11-51)
Q Engine oil filler cap (page 11-9)
W Engine coolant reservoir (page 11-15)
E Radiator cap (page 11-15)
R Engine oil level gauge (page 11-9)
T Power steering fluid reservoir (page 11-29)

11-8
3.0 liter models
HBB058BB
1 Air cleaner element (page 11-18)
2 Differential gear oil level gauge
(AT) (page 11-26)
3 Automatic transmission fluidlevel gauge (page 11-24)
4 Brake fluid reservoir (page 11-30)
5 Fuel filter
6 Windshield washer tank (page 11-47) 7
Fuse box (page 11-52)
8 Battery (page 11-51)
9 Engine oil filler cap (page 11-9)
Q Engine coolant reservoir (page 11-15)
W Engine oil level gauge (page 11-9)
E Radiator cap (page 11-15)
R Power steering fluid reservoir (page 11-29)

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Maintenance and service11-9
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Engine oil
Checking the oil level
Check the engine oil level at each fuel stop.
HBB061BD
HBB004JA
1. Park the vehicle on a level surface and stop the engine.
2. Pull out the dipstick, wipe it clean, and insert it again.
3. Be sure the dipstick is correctly inserted until it stops with the
graphic symbol
on its top appearing as shown in the illustra-
tion.
4. Pull out the dipstick again and check the oil level on it. If it is belowthe lower level, add oil to bring the level up to the upper level.
CAUTION
Use only engine oil with the recommended grade and viscosity.
If you check the oil level just after stopping the engine, wait a few min-
utes for the oil to drain back into the oil pan before checking the level.
To prevent overfilling the engine oil, do not add any additional oilabove the upper level when the engine is cold.
In 2.5-liter-engine models, the dipstick has a notch above the upper level.
Just after driving or while the engine is warm, the engine oil level
reading may be in a range between the upper level and the notch
mark. This is caused by thermal expansion of the engine oil.

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Maintenance and service11-13
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New API Certification Mark (Starburst Mark)
1
Indicates the oil quality by API desig- nations
2 Indicates the SAE oil viscosity grade
3 Indicates that the oil has fuel savingcapabilities
In choosing an oil, you want the proper quality and viscosity, as well
as one that will add to fuel economy. The following table lists the rec-
ommended viscosities and applicable temperatures.
When adding oil, different brands may be used together as long as
they are the same API classification and SAE viscosity as those rec-
ommended by SUBARU.
Engine oil viscosity (thickness) affects fuel economy. Oils of lower vis-
cosity provide better fuel economy. However, in hot weather, oil of
higher viscosity is required to properly lubricate the engine.
OM-H2756
SAE viscosity numbr and applicable temperature

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Maintenance and service11-15
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controlled to operate when the engine coolant reaches a specific tem-
perature.If the radiator cooling fan does not operate even when the engine
coolant temperature gauge exceeds the normal operating range, the
cooling fan circuit may be defective. Check the fuse and replace it if
necessary. If the fuse is not blown, have the cooling system checked
by your SUBARU dealer.
If frequent addition of coolant is necessary, there may be a leak in the
engine cooling system. It is recommended that the cooling systemand connections be checked for leaks, damage, or looseness.
Engine coolant Checking the coolant level
Check the coolant level at each fuel stop.
HBB004FB
1. Check the coolant level on the outside of the reservoir while the
engine is cool.
2. If the level is close to or lower than the “LOW” level mark, add
coolant up to the “FULL” level mark. If the reserve tank is empty, re-
move the radiator cap and refill as required.

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Maintenance and service11-39
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Winter (snow) tires
Winter tires are best suited for driving on snow-covered and icy
roads. However winter tires do not perform as well as summer tires
and all season tires on roads other than snow-covered and icy roads.
Tire inspection
Check on a daily basis that the tires are free from serious damage, nails,
and stones. At the same time, check the tires for abnormal wear.
Contact your SUBARU dealer immediately if you find any problem. NOTE When the wheels and tires strike curbs or are subjected to harsh
treatment as when the vehicle is driven on a rough surface, they can suffer damage that cannot be seen with the naked eye. This type of
damage does not become evident until time has passed. Try not todrive over curbs, potholes or on other rough surfaces. If doing so is
unavoidable, keep the vehicle ’s speed down to a walking pace or
less, and approach the curbs as squarely as possible. Also, makesure the tires are not pressed against the curb when you park thevehicle. If you feel unusual vibration while driving or find it difficult to
steer the vehicle in a straight line, one of the tires and/or wheelsmay be damaged. Drive slowly to the nearest authorized SUBARUdealer and have the vehicle inspected. Tire pressures and wear
Maintaining the correct tire pressures helps to maximize the tires ’ service
lives and is essential for good running performance. Check and, if nec-
essary, adjust the pressure of each tire (including the spare) at least
once a month (for example, during a fuel stop) and before any long jour-
ney.
Check the tire pressures when the tires are cold. Use a pressure gauge
to adjust the tire pressures to the values shown on the tire placard. The
tire placard is located on the door pillar on the driver ’s side.

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Correct tire pressure (tread worn evenly)
HGB033AA
Roadholding is good, and steering is responsive. Rolling resistance is
low, so fuel consumption is also lower.
Abnormally low tire pressure (tread worn at shoulders)
HSB012AA
Rolling resistance is high, so fuel consumption is also higher.

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Maintenance and service11-47
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tighten it to the specified torque.
Aluminum wheels (if equipped)
Aluminum wheels can be scratched and damaged easily. Handle them
carefully to maintain their appearance, performance, and safety.
When any of the wheels is removed and replaced for tire rotation or to
change a flat, always check the tightness of the wheel nuts after driving
approximatly 600 miles (1,000 km). If any nut is loose, tighten it to the
specified torque. Never apply oil to the threaded parts, wheel nuts, or tapered surface
of the wheel. Never let the wheel rub against sharp protrusions or curbs.
Be sure to fit tire chains on uniformly and completely around the tire,
otherwise the chains may scratch the wheel. When wheel nuts, balance weights, or the center cap is replaced, be
sure to replace them with genuine SUBARU parts designed for aluminumwheels.
Windshield washer fluid
CAUTION
Never use engine coolant as washer fluid because it could cause paint damage.
Check the level of the washer fluid at each fuel stop. If the level is low, fill
the fluid up to the neck of the reservoir.Use windshield washer fluid. If windshield washer fluid is unavailable use
clean water.
In areas where water freezes in winter, use an anti-freeze type windshield
washer fluid. SUBARU Windshield Washer Fluid contains 58.5% methyl
alcohol and 41.5% surfactant, by volume. Its freezing temperature varies
according to how much it is diluted, as indicated below.