Dan,

I would be interested in hearing if DC has any position of the use of ethanol blended fuels. I have read some things that describe differences in how octane is measured. I believe the rating we see on the pump is the average of the M and R octane ratings (sorry, I can't provide a definition for the M and R ratings). Apparently the average rating may not behave identically in all cars. One factor that can influence this behavior can be ethanol.
The recent increase in gas prices is likely to encourage the use of ethanol blends. What should we know about the use of these fuels in the Crossfire? Do we need a higher octane for an ethanol blend or would a lower octane be sufficient?

Thanks,

Johnnie