8th Generation Honda Civic Forum - View Single Post - Si owners: What gas do you use? What gas maximizes MPGs?

ZOE · 12-09-2006, 06:17 PM

Aren't eh Si's required to use 91? I use 91... have you guys ever heard of an octane boaster? i saw it at Canadian tire the other day never knew such a thing existed LOL

12-09-2006, 06:17 PM	#13 (permalink)
ZOE Senior Member Join Date: Jan 2006 Location: Waterloo or Toronto Age: 22 Posts: 1,684 Jackson Triggs iTrader: 2 / 100%	Aren't eh Si's required to use 91? I use 91... have you guys ever heard of an octane boaster? i saw it at Canadian tire the other day never knew such a thing existed LOL