Chevrolet 1999 Corvette Owner's Manual download pdf (Page 314)

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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.

NOTICE:

Your vehicle was not designed for fuel that

contains methanol. Don’t use it. It can corrode

metal parts in your fuel system and also damage

plastic and rubber parts. That damage wouldn’t

be covered under your warranty.

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Chevrolet 1999 Corvette Owner's Manual Page 314

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