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busypaws · 09-20-2011, 09:42 PM

yes mix away. I suspect that the 93 octane for the same price of the 91 octane is because the 93 has ethanol and the 91 is pure gas. Lots of other threads here discussing pros/cons of 10% ethanol mixture vs. pure gas. Search away.

09-20-2011, 09:42 PM	#2 (permalink)
busypaws EcoModding Apprentice Join Date: Jul 2009 Location: Live in Tucson AZ, work and car now in Detroit Posts: 200 Protege - '97 Mazda Protege DX 90 day: 46.42 mpg (US) Thanks: 13 Thanked 23 Times in 18 Posts	yes mix away. I suspect that the 93 octane for the same price of the 91 octane is because the 93 has ethanol and the 91 is pure gas. Lots of other threads here discussing pros/cons of 10% ethanol mixture vs. pure gas. Search away. __________________