1995 Chevrolet Lumina Owner's Manual - Page 201

Fuel Use regular unleaded gasoline rated 87 octane or at higher. It should meet specifications ASTM D48 in 14 the United States and CGSB3.5-92 in Canada. These fuels should havethe proper additives,so you should not have to add anythingto the fuel. Whataboutgasolinewithblendingmaterialsthat . contain oxygen (oxygenates), such MTBE or alcohol? as MTBE is "methyl tertiary-butyl ether." Fuel that is no more than 15%MTBE is fine for your vehicle.. Ethanol is ethylor grain alcohol. Properly-blended fuel that isno more than 10%ethanol is fine for your In the United States and Canada, it's easy to be sure you vehicle. get the right kind gasoline (unleaded). You'll of see Methanol is methyl or wood alcohol. UNLEADED right onthe pump. And only unleaded nozzles willfit into your vehicle's filler neck. Be sure the posted octane at least 87. If the octane is 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 usingfuel rated at 87 octane or higher and you still hear heavy knocking, your engine needs service. But don't worry if you hearlittle pinging noise when a you're acceleratingor driving up a hill. That's normal, and you don't have to buy a higher octane to getrid fuel of pinging. It'sthe heavy, constant knock that means you have a problem. NOTICE: Fuel that is more than5% methanol is bad for your vehicle. 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. And even 5%. at or less, there must be "cosolvents" and corrosion preventers in this fuel to help avoid these problems. 6-3