type of gas to use

SideWinderGX · 03-16-2007, 02:05 AM

i was reading to owners manual...and, i dont remember the exact words, but it went something like: unleaded fuel only, unleaded 87 can be used, however for added performance you may use unleaded 91. can i mix both of those fuels? i believe 87 is in my tank. well, i put in 87 last time, so its in there now. will 91 octane have any negative effects on my spark plugs or anything else? i know itll give me better performance but im just not sure if itll mess up anything, or if its worth it. thanks!

03-16-2007, 02:05 AM	#1
SideWinderGX 3" Exhaust Join Date: Feb 2007 Location: Syracuse, NY Posts: 203	type of gas to use i was reading to owners manual...and, i dont remember the exact words, but it went something like: unleaded fuel only, unleaded 87 can be used, however for added performance you may use unleaded 91. can i mix both of those fuels? i believe 87 is in my tank. well, i put in 87 last time, so its in there now. will 91 octane have any negative effects on my spark plugs or anything else? i know itll give me better performance but im just not sure if itll mess up anything, or if its worth it. thanks! __________________ my car: 1987 brownish Toyota Supra Turbo, automatic 7MGTE engine with ~100k miles on it.