well they all ready took out most of the 94 out of the pumps. my car has only had 94 put in it all its life. i talked with a guy and he said the 93 was just as good as the 94 if not better.so the car is put away 4 the winter and i was curious to see if anyone else put the 93 in there car yet if there was a diffrance in the 2 gases. if so what am i going 2 do. thanks guys.