1993 Chevrolet Lumina Owner's Manual - Page 195

I Fuelregular unleaded gasolinerated at Use 87 octane or higher. It should meet specifications ASTM D4814 in U.S. the and CGSB 3.5-92in Canada. These fuels should have proper additives, the so you should not have to add anything to thefuel. In the U.S. and Canada, it's easy to be sure you get the right kindof gasoline (unleaded). You'll see "UNLEADED" right on thepump. And only unleaded nozzles will fitinto your vehicle's filler neck. Be sure the posted octane is at least 87. If the octane is lessthan 87, you may get a heavy knocking noise when you drive. If it's bad enough, it can damage your What about gasoline with blending engine. as materials that contain oxygen, such If you're using fuel rated at 87 octane or MTBE or alcohol? higher and you still hear heavy MTBE is "methyl tertiary-butyl knocking, your engine needs service. ether." Fuel that is no morethan 15% But don't worryif you hear a little MTBE is fine for your vehicle. pinging noise when you're accelerating Ethanol is ethylor grain alcohol. or drivingup a hill. That's normal, and Properly-blended fuelthat is no more you don't haveto buy a higher octane than 10% ethanol is fine for your fuel to get rid of pinging. It's the heavy, vehicle. constant h o c k that means you havea Methanol is methyl or wood alcohol. problem. Fuel Capacity: I NOTEE V6 Engines-16.5 U.S. Gallons (62 L). Fuel that is more than 5 L4 Engine--17.1 U.S. Gallons (65 L). methanol is bad for you Use unleaded fuel only. Don't use it. It can corr parts in your fuel system also and damage plastic and rubber parts. That damage wouldn't be covered under your warranty. 5% or less,there mus "cosolvents" and corrosi