1996 Chevrolet Cavalier Owner's Manual - Page 240

could provide improved driveability and emission control system protection compared to other gasolines. You can be injured and your vehicle could be damaged if you try do service work on a to vehicle without knowing enough about it. 0 Be sure you have sufficient knowledge, experience, and the proper replacement parts and tools before you attempt any vehicle maintenance task. 0 Be sure to use the proper nuts, bolts and other fasteners. "English" and "metric" fasteners can be easily confused. you use If the wrong fasteners, parts can later break or falloff. You could be hurt. Be sure the posted octane is at least 87. If the octane is less than 87, you may geta heavy knocking noise when you drive. If it's badenough, it can damage your engine. If you're usingfuel rated at 87 octane or higher and you still hear heavy knocking, your engine needs service. But don't worry you hear a little pinging noise when if you're accelerating or driving upa hill. That's normal, and you don't have buy a higher octane fuel to get rid to of pinging. It's the heavy, constant knock that means you havea problem. Fuel Use regular unleaded gasoline rated at 87 octane or higher. At a m i u ,it should meet specifications ASTM D4814 i mm n i the United States and CGSB 3.5-M93 in Canada. n 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 If your vehicleis certified to meet California Emission Standards (indicatedon the underhood tune-uplabel), 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 onfuels meeting federal specifications,but 'emissioncontrol system performance may be affected. The malfunction indicator on lamp your instrument panel may on and/or your vehicle turn may fail a smog-check test. If this occurs, return to your authorized Chevroletdealer for diagnosis to determine the causeof failure. In the event it is determined that the; cause of the conditionis the type of fuels used, repairs may notbe covered by your warranty. 6-2