1995 Chevrolet Camaro Owner's Manual - Page 236

Fuel 5 7 LT1 (Code P) .L The 8th digit of your vehicle identification number (VIN) shows the code letter for your engine. You will find the VIN at the topleft of your instrument panel. (See "Vehicle Identification Number" in the Index.) Use premium unleaded gasoline rated at 91 octane or higher. You may use middle grade or regular unleaded gasolines, but your vehicle maynot accelerate as well. The gasoline you use should meet specifications ASTM D4814 in the UnitedStates and CGSB 3.5-92 in Canada. These fuels should have the proper additives, so you should not have to add anything to the fuel. In the United States and Canada, it's easy to be sure you get the right kind ofgasoline (unleaded). You'll see UNLEADED right on the pump. And unleaded only nozzles will fit into your vehicle'sfiller neck. Be sure the posted octane for premium is at least 9 I (at least 89 for middle grade and 87 for regular). If the octane is less than 87, you may get a heavy knocking noise when you drive. If it's badenough, it can damage your engine. If you're using fuel ratedat 9 1 octane or higher and you still hear heavy knocking, your engine needs service. noise when But don't worryif you hear a little pinging you're accelerating or driving up a hill. That's normal and you don't haveto buy ahigher octane fuel to get rid of pinging. It's the heavy, constant knock that means you have a problem. What about gasoline with blending materials that contain oxygen (oxygenates), such as MTBE alcohol? or MTBE is "methyl tertiary-butyl ether.'' Fuel that isno more than 15% MTBE fine for is your vehicle. Ethanol is ethyl or grain alcohol. Properly-blended fuel that is no more than 10% ethanol is fine for your vehicle. Methanol is methyl or wood alcohol. I NOTICE: Fuel that is more than 5% 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% or at less, there must be "cosolvents" and corrosion preventers in this fuel to help avoid these problems. 6-4