I said come to ME and pay in 1964 quarters. I'll sell you a gallon for each 1964 quarter.
The doofus working behind the counter at a gas station knows nothing of the content of old quarters, so no, you can't pay directly at the pump. You can go to any coin shop and get $6 (a little less actually; they want to make a profit), and then you can usu that $6 to buy gas. But my offer still stands: a quarter a gallon, as long as the quarters are pre-1965. Check out what 1964 quarters are selling for on eBay, and then tell me they're worth the same as 2012 quarters.