Chevrolet 2001 Lumina Owner's Manual download pdf (Page 222)

6-4

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

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

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

If 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

of 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 emission control

label), it is designed to operate on 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. See “Malfunction

Indicator Lamp” in the Index. If this occurs, return to

your authorized Chevrolet dealer for diagnosis to

determine the cause of failure. In the event it is

determined that the cause of 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 may contain an octane

-enhancing additive called

methylcyclopentadienyl manganese tricarbonyl (MMT);

ask your service station operator whether or not the 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 on your instrument panel may turn on.

If this occurs, return to your authorized Chevrolet dealer

for service.

To provide cleaner air, all gasolines in the United States

are now required to contain additives that will help

prevent deposits from forming in your engine and fuel

system, allowing your emission control system to

function properly. Therefore, you should not have to add

anything to the fuel. In addition, gasolines containing

oxygenates, such as ethers and ethanol, and

reformulated gasolines may be available in your area to

contribute to clean air. General Motors recommends that

you use these gasolines, particularly if they comply with

the specifications described earlier.

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Chevrolet 2001 Lumina Owner's Manual Page 222

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