Chevrolet 1997 Astro Bedienungshandbuch PDF herunterladen (Seite 259)

Adding Equipment to the Outside

Your Vehicle

Things you might add to the outside

your vehicle can

affect the airflow around it. This may cause wind noise

and affect windshield washer performance. Check with

your GM dealer before adding equipment

the outside

of your vehicle.

Use regular unleaded gasoline rated at 87 octane or higher.

At a minimum, it should meet specifications ASTM

D48

in the United States and CGSB

3.5-M93

in Canada.

Improved gasoline specifications have been developed by

the American Automobile Manufacturers Association

(AAMA) for better vehicle performance and engine

protection. Gasolines meeting the AAMA specification

could provide improved driveability and emission control

system protection compared to other gasolines.

Be sure the posted octane is at least 87. If the octane

less than 87, you may get a heavy knocking noise when

you drive. If it’s bad enough, it can damage your engine.

you’re using

fuel

rated at 87 octane or higher and you

hear heavy knocking, your engine needs service. But

don’t worry if

you

hear a little pinging noise when

you’re accelerating or driving up a hill. That’s normal,

and you don’t have to buy a higher octane fuel to get rid

pinging. It’s the heavy, constant knock that means

you

have a problem.

If your vehicle is certified to meet California Emission

Standards (indicated on the underhood tune-up label),

it is designed to operate

fuels that meet California

specifications. If such fuels are

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 on

your instrument panel may turn on and/or your vehicle

may fail a smog-check test. If this occurs, return to your

authorized GM dealer for diagnosis to determine the

cause

failure. In the event

is determined that

the

cause

the condition is the type of fuels used, repairs

may not be covered by your warranty.

Some gasolines that are not reformulated for low

emissions contain an octane-enhancing additive called

methylcyclopentadienyl manganese tricarbonyl (MMT);

ask your service station operator whether or not his fuel

contains MMT. General Motors does

not

recommend the

use of such gasolines. If fuels containing MMT are used,

spark plug

life

may be reduced and your emission

control system performance may be affected.

The

malfunction indicator lamp

your instrument panel

may turn

on.

If this occurs, return

your authorized

dealer for service.

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