I'd vote for placebo effect. Yes, a lower octane fuel probably has a slightly higher energy content. However, I doubt there is 16-20% more energy in the 89 octane vs the 92 octane fuel.

So I'm voting for placebo effect.

TB

Tony Boner
Personal: 98cdw27@charter.net Work: tony.boner@sun.com
Saving the computer world from WinBloze as Unix/Solaris/Java Guru http://www.sun.com
1998 Contour SVT Pre-E1 618/6535 Born On Date: 4/30/1997
Now with Aussie Bar induced mild oversteer.