Chevrolet 2006 impala Spezifikationen PDF herunterladen (Seite 251)

Gasoline Octane

If your vehicle has a V6 engine, use regular unleaded

gasoline with a posted octane rating of 87 or higher.

If the octane rating is less than 87, you may notice an

audible knocking noise when you drive, commonly

referred to as spark knock. If this occurs, use a gasoline

rated at 87 octane or higher as soon as possible. If

you are using gasoline rated at 87 octane or higher and

you hear heavy knocking, your engine needs service.

If your vehicle has the 5.3L V8 engine (VIN Code C),

use premium unleaded gasoline with a posted octane

rating of 91 or higher. You may also use regular unleaded

gasoline rated at 87 octane or higher, but your vehicle’s

acceleration may be slightly reduced, and you may notice

a slight audible knocking noise, commonly referred to as

spark knock. If the octane is less than 87, you may notice

a heavy knocking noise when you drive. If this occurs,

use a gasoline rated at 87 octane or higher as soon as

possible. Otherwise, you might damage your engine. If

you are using gasoline rated at 87 octane or higher and

you hear heavy knocking, your engine needs service.

Gasoline Speciﬁcations

At a minimum, gasoline should meet ASTM

speciﬁcation D 4814 in the United States or

CAN/CGSB-3.5 in Canada. Some gasolines

may contain an octane-enhancing additive called

methylcyclopentadienyl manganese tricarbonyl (MMT).

General Motors recommends against the use of

gasolines containing MMT. See Additives on page 5-6 for

additional information.

California Fuel

If your vehicle is certiﬁed to meet California Emissions

Standards, it is designed to operate on fuels that

meet California speciﬁcations. See the underhood

emission control label. If this fuel is not available

in states adopting California emissions standards, your

vehicle will operate satisfactorily on fuels meeting

federal speciﬁcations, but emission control system

performance may be affected. The malfunction indicator

lamp may turn on and your vehicle may fail a

smog-check test. See Malfunction Indicator Lamp on

page 3-34. If this occurs, return to your authorized

GM dealer for diagnosis. If it is determined that

the condition is caused by the type of fuel used,

repairs may not be covered by your warranty.

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