Subaru 2003 Baja - Manual (Page 208)

BAJA U.S.A..A2310BE–A
7-2
Fuel
CAUTION
Use of a fuel which is low in quality or use of an inappropriate
fuel additive may cause engine damage.
J Fuel requirements
The 2.5 Liter engine is designed to operate using unleaded gasoline with
an octane rating of 87 AKI or higher.
B Fuel octane rating
This octane rating is the average of the Research Octane and Motor
Octane numbers and is commonly referred to as the Anti Knock Index
(AKI).
Using a gasoline with a lower octane rating can cause persistent and
heavy knocking, which can damage the engine. Do not be concerned
if your vehicle sometimes knocks lightly when you drive up a hill or
when you accelerate. See your dealer or a qualified service techni-
cian if you use a fuel with the specified octane rating and your vehicle
knocks heavily or persistently.
B Unleaded gasoline
The neck of the fuel filler pipe is designed to accept only an unleaded
gasoline filler nozzle. Under no circumstances should leaded gaso-
line be used because it will damage the emission control system and
may impair driveability and fuel economy.
B Gasoline for California-certified LEV
Your vehicle was certified to California’s low emission vehicle (LEV)
standards as indicated on the underhood tune-up label. It is designed
to optimize engine and emission control system performance with
gasoline that meets the clean burning low-sulfur California gasoline
specifications. If you live in any other state than California, your ve-
hicle will operate on gasoline meeting Federal specifications. Gaso-
line sold outside California is permitted to have higher sulfur levels,
which may affect the performance of your vehicle’s catalytic converter