thanks to all who replied,  the consensus seems to be the improvement is in my 
imagination.  However, the containers also brag about octane boost, which makes 
sense, since the primary difference between leaded and unleaded gas is 
tetraethyl lead compound.  TIsn't the he purpose of the lead in leaded gas was 
to increase octane number?
thanks..........mel  1971mgbgt
In a message dated 4/15/2004 2:47:46 PM Eastern Daylight Time, 
mvheim@studiolimage.com writes:
> unless it is also an octane booster, and then only if you 
> advance the timing
 
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