Leaded gas is gone as you hot-rodders know, but where does that
	leave the older high compression engines of pre-73, that were
	designed to run on leaded gas?   
	My 71-Z has a 12:1 compression ratio and people have told me that I
	should stick with high octane/leaded gas.  They say lead substitute
	should be added to the unleaded gas, so the valves don't wear out 
	prematurely.  But others say that's a myth.

	  If you know what I'm talking about and have any ideas, I'ld like 
	to hear from you.
								-Farrokh-