octane SUBARU LEGACY 2001 3.G Owners Manual

GAS STATION REFERENCE
Fuel:2.5 Liter models:
Use only unlead ed g asoline with an oc tane rating of 87
AKI or hig her. 3.0 Liter models:
Use p remium unlead ed g asoline with an oc tane rating of
91 AKI or hig her. Reg ular unlead ed g asoline with an oc -
tane rating of 87 AKI may b e used if nec essary. For op ti-
mum eng ine p erformanc e and d riveab ility, it is rec o m-
mend ed that you use p remium g rad e unlead ed g asoline .
Fuel octane rating:
This oc tane rating is the averag e of the Researc h O c tane
and Motor Oc tane numb ers and is c ommonly referred t o
as the Anti Knoc k Ind ex (AKI). Refer to “ Fuel” sec tion in
this manual.
Fuel capacity: 16.9 US g al (64 liters, 14.1 Imp g al)
Engine oil: Use only API c lassific ation SJ or SH with the word s
“ENERGY CONSERVING II ”
or the New API c ertific ation mark (starb urst mark) d is-
p layed on the c ontainer.
Engine oil capacity: 2.5 liter mod els 4.2 US q t (4.0 liters, 3.5 Imp q t)
3.0 liter mod els 6.0 US q t (5.7 liters, 5.0 Imp q t)
Cold tire pressure: See the lab el loc ated und er the d river ’s d oor latc h.

7-2
Fuel
CAUTION
Use of a fuel which is low in quality or use of an inappropriate fuel additive may cause engine damage.
Fuel requirements 2.5 Liter models
The 2.5 Liter eng ine is d esig ned to op erate using u nlead ed g asoline
with an oc tane rating of 87 AKI or hig her. 3.0 Liter models
The 3.0 Liter eng ine is d esig ned to op erate using p remium unlead ed
g asoline with an oc tane rating of 91 AKI or hig her. Reg ular unlead ed
g asoline with an oc tane rating of 87 AKI may b e use d if nec essary.
For op timum eng ine p erformanc e and d riveab ility, it is rec ommend ed
that you use p remium g rad e unlead ed g asoline. Fuel octane rating
This oc tane rating is the averag e of the Researc h O c tane and Motor
Oc tane numb ers and is c ommonly referred to as the A nti Knoc k Ind ex
(AKI).
Using a g asoline with a lower oc tane rating c an c au se p ersistent and
heavy knoc king , whic h c an d amag e the eng ine. Do not b e c onc erned
if your vehic le sometimes knoc ks lig htly when you d rive up a hill or
when you ac c elerate. See your d ealer or a q ualified servic e tec hni-
c ian if you use a fuel with the sp ec ified oc tane ra ting and your vehic le
knoc ks heavily or p ersistently. Unleaded gasoline
The nec k of the fuel filler p ip e is d esig ned to ac c ep t only an unlead ed
g asoline filler nozzle. Und er no c irc umstanc es shou ld lead ed g aso-
line b e used b ec ause it will d amag e the emission c o ntrol system and
may imp air d riveab ility and fuel ec onomy.