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Oxeygenated Fuel

10 July 2000
El Dorado Hills, CA
Is it me or have you also noticed a decrease in engine performance due to the oxeygenated fuel (CA and other States) used to reduce CO2 and NOX emmisions.

97 T- @ 15K
I haven't noticed any difference in engine performance. I often travel to rural areas where oxygenated fuel isn't required by the EPA, so I get to switch back and forth between fuels, and I don't notice any difference at all. I've also tried higher octane fuels (100 and 105) at the track and haven't noticed any difference with them vs the usual 92-93 octane, either.

What I HAVEN'T done is use anything less than premium fuel, though.