Quote:
Originally Posted by Alex
Ethanol is actually one of the most common ways to *raise* the octane level. The high ethanol content gas means that much less of other additives and treatments are necessary to meet the octane rating requirements. Ethanol has less available power in it by weight compared to standard gasoline, but its octane rating is quite high.
|
So my question is now... in California all gas has 10% ethanol in it (one of the many things that makes this state so freaking annoying) so should I keep putting in 91 octane? From this statement I gather that ethanol artificially raises octane level so in actuality you are purchasing gas at a lower octane. In all honesty it's a 10 cent difference between 87 and 91 and doesn't affect the final total enough to really get me to use the less expensive gas.