Buick RIVIERA 1993 Owner Manual

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Gasolines for Cleaner Air

Your use of gasoline with detergent additives will help prevent deposits from fomting in your engine and fuel system. That helps keep your engine in tune and your emission control system working properly. It's good for your vehicle. and you‘ll be doing your part for cleaner air.

Many gusollines are now blended with materials called oxygenates. General Motors recommends that you use gasoline-s with these blending materials. such as MTBE and ethanol. By doing so. you can help clean the air. especially in those parts of the country that have high carbon monoxide levels.

In addition. some gasoline suppliers are now producing reformulated gasolines. These gasolines are specially designed to reduce vehicle emissions. General Motors reconnnends that you use reformulated gasoline. By doing so. you can help clean the air, especially in those parts of the eeunlry that have high ozone in vels.

You should ask your sersioe station operators if their gasolines contain detergents and oxygenates. and if they have been refonnulated to reduce vehicle emissions.

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Fuels in Foreign Countries

If you plan on driving in another country outside the US. or Canada, unleaded fuel may be hard to find. Do not use leaded gasoline. If you use even one Ianltl‘u]. your emission controls won't work well or at all. With continuous use. spark plugs can get fouled. the exhaust system can corrode. and your engine oil can deteriorate quickly. Your vehicle‘s oxygen sensor will be damaged. All of that means costly repairs that wouidn't be covered by your warranty.

To check on fuel aruilabiiily. ask an auto club. or contact a major oil company Ijtat does business in the country where you‘ll be driving.

1t'ou can also write us at the following address for advice. Just tell us where you‘re going and give your Vehicle Identification Number {VIN}.

General Motors of Canada Ltd. International Export Sales

PO. Box 823

Oshawa. Ontario 1.] H 't'N |. Canada

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