?

Diesel costs far less than gasoline to refine, so logicaly it should be lower in price. In fact it was during the eighties, I drove an oil tanker for a small fuel oil company and diesel fuel was about twenty cents cheaper per gallon, now it's about eighty cents more per gallon. I know that the cost of refining it is still lower than gasoline. aren't there laws against price gouging on the national scale?