8th Generation Honda Civic Forum - View Single Post

GalaxSIGray · 06-09-2009, 06:33 PM

I felt cheap and ran 89 once. It ran really rough, especially at idle. Low octane can be bad in such a high compression engine because can cause premature combustion. Maybe explaining the roughness?

06-09-2009, 06:33 PM	#244 (permalink)
GalaxSIGray Member Join Date: Aug 2006 Location: Northeast Posts: 33	I felt cheap and ran 89 once. It ran really rough, especially at idle. Low octane can be bad in such a high compression engine because can cause premature combustion. Maybe explaining the roughness?