Subaru Impreza II 2 GD owners manual page 199

text version of content this owner's manual page from owners manual to the vehicle Subaru Impreza, year of production 2001 - 2007:

A1900BE-A-G07.fm Page 2 Wednesday, June 22, 2005 9:43 AM 7-2 Starting and operating Fuel Starting and operatingpoor accelerator response will result. times knocks lightly when you drive up a TWRX-STI hill or when you accelerate. See your dealer or a qualified service technician if The 2.5-liter turbo engine is designed to you use a fuel with the specified octane operate using super-premium unleaded Use of a fuel which is low in quality gasoline with an octane rating of 93 AKI or rating and your vehicle knocks heavily or or use of an inappropriate fuel addi- higher. If super-premium unleaded gaso- persistently. tive may cause engine damage. TUnleaded gasoline line with an octane rating of 93 AKI or higher is not available, premium unleaded The neck of the fuel filler pipe is designed Fuel requirements gasoline with an octane rating of 91 AKI or to accept only an unleaded gasoline filler T2.5-liter non-turbo models higher may be temporarily used. For opti- nozzle. Under no circumstances should mum engine performance and driveability, leaded gasoline be used because it will The 2.5-liter non-turbo engine is designed it is required that you use super-premium damage the emission control system and to operate using unleaded gasoline with grade unleaded gasoline with an octane may impair driveability and fuel economy. an octane rating of 87 AKI or higher. rating of 93 AKI or higher. TGasoline for California-certified LEV TWRX NOTE Your vehicle was ificerted to California’s Be sure to use super-premium unlead- The 2.5-liter turbo engine is designed to low emission vehicle (LEV) standards as operate using premium unleaded gasoline ed gasoline of 93 AKI or higher for WRX-STI. If other gasoline (lower than indicated on the underhood tune-up label, with an octane rating of 91 AKI or higher. 93 AKI) is used, knocking, reduced out- it is designed to optimize engine and If premium unleaded gasoline is not avail- put and poor accelerator response will emission performance with gasoline that able, regular unleaded gasoline with an result. meets the clean burning low-sulfur Califor- octane rating of 87 AKI or higher may be nia gasoline specifications. If you live in temporarily used. For optimum engine any other state than California, your vehi- performance and driveability, it is required TFuel octane rating cle will operate on gasoline meeting Fed- This octane rating is the average of the that you use premium grade unleaded eral specifications. Gasoline sold outside gasoline. Research Octane and Motor Octane num- California is permitted to have higher sul- NOTE bers and is commonly referred to as the fur levels, which may affect the perfor- Anti Knock Index (AKI). mance of your vehicle’s catalytic convert- Be sure to use premium unleaded gas- Using a gasoline with a lower octane rat- er and may produce a sulfur exhaust odor oline of 91 AKI or higher for WRX. If ing can cause persistent and heavy other gasoline (lower than 91 AKI) is or smell. SUBARU recommends that you knocking, which can damage the engine. try a different brand of unleaded gasoline used, knocking, reduced output and Do not be concerned if your vehicle some- having lower sulfur to determine if the

owners manual Subaru Impreza

owners manual Subaru Impreza - year of production: 2001, 2002, 2003, 2004, 2005, 2006, 2007 - Subaru Impreza II 2 GD owners manual EN