2001 SUBARU IMPREZA fuel

Starting and operating7-49
–
CONTINUED –
Rating ).
The GVW (Gross Vehic le Weig ht) must never exc eed th
e GVWR. GVW is
the c omb ined total of weig ht of the vehic le, fuel, d river, all p asseng ers,
lug g ag e, any op tional eq uip ment and trailer tong ue load . Therefore, the
GVW c hang es d ep end ing on the situation. The GVWR eq uals Curb
Weig ht (ac tual weig ht of your vehic le – inc lud ing stand ard eq uip ment,
fluid s, emerg enc y tools and sp are tire assemb ly) p l us the vehic le c ap ac -
ity weig ht.
In ad d ition, the total weig ht ap p lied to eac h axle (GAW) must never ex-
c eed the GAWR. The front and rear GAWs c an b e ad jus ted b y reloc ating
lug g ag e insid e the vehic le.
Even if the total weig ht of your lug g ag e is lower t han the vehic le c ap ac ity
weig ht, either front or rear GAW may exc eed the GAW R, d ep end ing on
the d istrib ution of the lug g ag e.
If you c arry heavy load s in the vehic le, you should c onfirm that GVW and
front and rear GAWs are within the GVWR and GAWR b y p utting your
vehic le on a vehic le sc ale, found at a c ommerc ial w eig hing station.
Do not use rep lac ement tires with a lower load rang e than the orig inals
b ec ause they may lower the GVWR and GAWR limitation s. Rep lac ement
tires with a hig her load rang e than the orig inals d o not inc rease the
GVWR and GAWR limitations.
Trailer towing
Your c ar is d esig ned and intend ed to b e used p rimar ily as a p asseng er-
c arrying vehic le. Towing a trailer p uts ad d itional load s on your c ar’s en-
g ine, d rive train, b rakes, tires and susp ension and has an ad verse effec t
on fuel ec onomy.
If you d o d ec id e to tow a trailer, your safety and satisfac tion d ep end
up on p rop er use of c orrec t eq uip ment and c autious o p eration of your ve-
hic le. Seek the ad vic e of a p rofessional trailer an d /or hitc h sup p lier to
assist you in p urc hasing a hitc h and other nec essar y towing eq uip ment
ap p rop riate for your vehic le. In ad d ition, b e sure to follow the instruc tions
on c orrec t installation and use p rovid ed b y the tra iler and other towing

9-2
Exterior care
Washing
CAUTION
When washing the vehicle, the brakes may get wet. As a result,
the brake stopping distance will be longer. To dry the brakes, drive the vehicle at a safe speed while lightly pressing the brakepedal to heat up the brakes. Do not wash the engine compartment and areas adjacent to it.
If water enters electrical parts or the power steering fluid reser-
voir, it will cause engine trouble or faulty power steering respec-
tively.
The b est way to p reserve your vehic le ’s b eauty is freq uent washing .
Wash the vehic le at least onc e a month to avoid c on tamination b y road
g rime.
Wash d irt off with a wet sp ong e and p lenty of lukew arm or c old water. Do
not wash the vehic le with hot water and in d irec t s unlig ht.
Salt, c hemic als, insec ts, tar, soot and b ird d rop p i ng s should b e washed
off b y using a lig ht d eterg ent, as req uired . If you use a lig ht d eterg ent,
make c ertain that it is a neutral d eterg ent. Do not use strong soap or
c hemic al d eterg ents. All c leaning ag ents should b e p romp tly flushed
from the surfac e and not allowed to d ry there. Rins e the vehic le thor-
oug hly with p lenty of lukewarm water. Wip e the rema ining water off with a
c hamois or soft c loth. NOTE When having your vehicle washed in an automatic car wash, make
sure beforehand that the car wash is of suitable type. If the vehicle
is equipped with a rear spoiler, it may be damaged by the brush, etc.
Washing the underbody
Chemic als, salts, and g ravel used for d eic ing road surfac es are ex-
tremely c orrosive, ac c elerating the c orrosion of un d erb od y c omp o-
nents, suc h as the exhaust system, fuel and b rake l ines, b rake

9-4
Corrosion protection
Your SUBARU has b een d esig ned and b uilt to resist c
orrosion. Sp ec ial
materials and p rotec tive finishes have b een used on most p arts of the
vehic le to help maintain fine ap p earanc e, streng th, and reliab le op era-
tion.
Most common causes of corrosion
The most c ommon c auses of c orrosion are:
1. The ac c umulation of moisture retaining d irt and d eb ris in b od y
p anel sec tions, c avities, and other areas.
2. Damag e to p aint and other p rotec tive c oating s c au sed b y g ravel
and stone c hip s or minor ac c id ents.
Corrosion is ac c elerated on the vehic le when:
1. It is exp osed to road salt or d ust c ontrol c hemic als, or used in
c oastal areas where there is more salt in the air, or in areas where
there is c onsid erab le ind ustrial p ollution.
2. It is d riven in areas of hig h humid ity, esp ec iall y when temp eratures
rang e just ab ove freezing .
3. Damp ness in c ertain p arts of the vehic le remains for a long time,
even thoug h other p arts of the vehic le may b e d ry.
4. Hig h temp eratures will c ause c orrosion to p arts o f the vehic le
whic h c annot d ry q uic kly d ue to lac k of p rop er vent ilation.
To help prevent corrosion
Wash the vehic le freq uently. If you d rive on salted road s in the winter
or if you live in a c oastal area, you should flush the und erb od y with
fresh water freq uently.
After the winter has end ed , it is rec ommend ed that the und erb od y b e
g iven a very thoroug h washing .
Before the b eg inning of winter, c hec k the c ond ition of und erb od y
c omp onents, suc h as the exhaust system, fuel and b r ake lines, b rake
c ab les, susp ension, steering system, floor p an, and fend ers. If any of
them are found to b e rusted , they should b e g iven a n ap p rop riate rust
p revention treatment or should b e rep lac ed . Contac t your SUBARU

10-4
Always use the proper tools and make certain that they are
well maintained. Never get under the vehicle supported only by jack. Always
use a safety stands to support the vehicle. Never keep the engine running in a poorly ventilated area,
such as a garage or other closed areas. Do not smoke or allow open flames around the fuel or battery.
This will cause a fire. Wear adequate eye protection to guard against getting oil or
other fluids in your eyes. If something does get in your eyes,
thoroughly wash it out with clean water. Because the fuel system is under pressure, replacement of the
fuel filter should be performed only by your SUBARU dealer. The SRS airbag has no user-serviceable parts. Tampering with
or disconnecting the system ’s wiring could result in accidental
inflation of the airbag or could make the system inoperative,
which may result in serious injury. The wiring harnesses of theSRS airbag system are covered with yellow insulation and the
connectors of the system are yellow, for easy identification. Donot use electrical test equipment on any circuit related to the SRSairbag system. For required servicing of the SRS airbag, see your
nearest SUBARU dealer. Before checking or servicing in the engine compart- ment
Always stop the engine and set the parking brake firmly to pre-
vent the vehicle from moving. Always let the engine cool down. Engine parts become very
hot when the engine is running and remain hot for some time af-ter the engine is stopped. Do not spill engine oil, engine coolant, brake fluid or any other
fluid on hot engine components. This may cause a fire. Always remove the key from the ignition switch. When the
ignition switch is in the “ON” position, the cooling fan may oper-
ate suddenly even when the engine is stopped.

10-6Engine compartment overview
1 Manual transmission oil level
g aug e (MT) (p ag e 10-19) or
Differential g ear oil level
g aug e (AT) (p ag e 10-22)
2 Air c leaner element
(p ag e 10-16)
3 Clutc h fluid reservoir
(p ag e 10-28)
4 Automatic transmission fluid
level g aug e (p ag e 10-20)
5 Brake fluid reservoir
(p ag e 10-26)
6 Fuel filter 7
Wind shield washer tank
(p ag e 10-31)
8 Fuse b ox (p ag e 10-43)
9 Battery (p ag e 10-29)
Q Eng ine oil filler c ap
(p ag e 10-7)
W Eng ine c oolant reservoir
(p ag e 10-13)
E Eng ine oil level g aug e
(p ag e 10-7)
R Power steering fluid reservoir
(p ag e 10-25)
T Rad iator c ap (p ag e 10-13) HGA017BB

Maintenance and service10-7
–
CONTINUED –
Engine oil
Checking the oil level
Chec k the eng ine oil level at eac h fuel stop .
OM-H0189
HG0351
Upper level Lower levelNotch
1. Park the vehic le on a level surfac e and stop the eng ine.
2. Pull out the d ip stic k, wip e it c lean, and insert it ag ain.
3. Be sure the d ip stic k is c orrec tly inserted until it stop s with the
g rap hic symb ol on its top ap p earing as shown in the illustra-
tion.
4. Pull out the d ip stic k ag ain and c hec k the oil lev el on it. If it is b elow
the lower level, ad d oil to b ring the level up to t he up p er level.
CAUTION
Use only engine oil with the recommended grade and viscosity.
If you c hec k the oil level just after stop p ing the eng ine, wait a few min-
utes for the oil to d rain b ac k into the oil p an b ef ore c hec king the level.
Just after d riving or while the eng ine is warm, the eng ine oil level
read ing may b e in a rang e b etween the up p er level a nd the notc h
mark. This is c aused b y thermal exp ansion of the en g ine oil.
To p revent overfilling the eng ine oil, d o not ad d a ny ad d itional oil
ab ove the up p er level when the eng ine is c old .

10-10
Recommended grade and viscosity CAUTION
Use only engine oil with the recommended grade and viscosity.
Oil grade: API classification SJ or SH with the words “ENERGY
CONSERVING II ” (if you cannot obtain the oil with SJ
or SH grade, you may use SG grade oil.) or the new
API mark (Starburst mark) displayed on the container.
New API Certification Mark (Starburst Mark)API Service label
1
2
3
1 Ind ic ates the oil q uality b y API d esig nations
2 Ind ic ates the SAE oil visc osity g rad e
3 Ind ic ates that the oil has fuel saving c ap ab ilities
In c hoosing an oil, you want the p rop er q uality and visc osity, as well
as one that will ad d to fuel ec onomy. The following tab le lists the rec -
ommend ed visc osities and ap p lic ab le temp eratures.
When ad d ing oil, d ifferent b rand s may b e used tog et her as long as
they are the same API c lassific ation and SAE visc os ity as those rec -
ommend ed b y SUBARU.
Eng ine oil visc osity (thic kness) affec ts fuel ec ono my. Oils of lower vis-
c osity p rovid e b etter fuel ec onomy. However, in hot weather, oil of
hig her visc osity is req uired to p rop erly lub ric ate the eng ine.

Maintenance and service10-13
–
CONTINUED –

Engine coolant Checking the coolant level
Chec k the c oolant level at eac h fuel stop .
HG0114
“
FULL ”
level mark
“ LOW ”
level mark
1. Chec k the c oolant level on the outsid e of the res ervoir while the
eng ine is c ool.
2. If the level is c lose to or lower than the “LOW ” level mark, ad d
c oolant up to the “FULL ” level mark. If the reserve tank is emp ty, re-
move the rad iator c ap and refill as req uired .
HG0115
Rubber gaskets
3. After refilling the reserve tank and the rad iator , reinstall the c ap s
and c hec k that the rub b er g askets insid e the rad iat or c ap are in the
p rop er p osition.