Is it bad to change my car's gas from unleaded to supreme?
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2011 Honda Civic Question: Is it bad to change my car's gas from unleaded to supreme?
Answer #1patrick mannion from Greg Solow's Engine Room, October 17, 2011, 21:27Master
Supreme gas sold in this country is also unleaded. See what octane rating is suggested by Honda should be in your owner's handbook. Check here http://repairpal.com/automobile-owners-manuals-online or try this link you may be able to down load a free copy of the owner's manual for your vehicle http://www.autousermanual.com/