This FAQ is intended to provide a fairly technical description of what 
gasoline contains, how it is specified, and how the properties affect the 
performance of your vehicle. The regulations governing gasoline have 
changed, and are continuing to change. These changes have made much of the 
traditional lore about gasoline obsolete. Motorists may wish to understand 
a little more about gasoline to ensure they obtain the best value, and the 
most appropriate fuel for their vehicle. There is no point in prematurely 
destroying your second most expensive purchase by using unsuitable fuel, 
just as there is no point in wasting hard-earned money on higher octane
fuel that your automobile can not utilize. Note that this FAQ does not
discuss the relative advantages of specific brands of gasolines, it is 
only intended to discuss the generic properties of gasolines.