Remember when diesel was ALWAYS cheaper than gasoline? Diesel is WAY easier to produce out of crude than gasoline - requires much less refining. BUT, the ULS requirement changed all that - thank you government. And if the ocean freight is now going to be required to burn ULS, good luck! Much harder on the diesel engines with lower amounts of sulfur - the sulfur adds lubricity. ULS has caused more engine wear in diesel engines & has caused all kinds of issues in the trucking industry, as has all the new emissions crap. Just talking with a PACCAR dealer a few months ago & he said there are still all kinds of emissions systems issues that cause fleets so many problems with equipment down.

The crude we are extracting from the shale oil in the Baaken & Green River Formations (they are connected too), is very high quality, but high in sulfur. It's cheaper for us to export this oil than to try & refine it - I was told this by one of the companies drilling in the Green River Formation. Also, remember when gas prices were separated by 10-cents a gallon for the 87, 90, & 92 octanes? Now, the price difference between 87 octane & premium is at least 60-cents a gallon, & more often 80-cents. WHY? What changed? It's because the bean counters said "hey - we CAN do this! What can the consumer do to counter? Nothing!"

We should drop the requirement for ULS & use our own oil. Gas should all switch over to a single blend nationwide, & we should be building new refineries all over the country. Since the stringent diesel emissions were implemented back in 2007, we have seen NO measurable improvement in air quality - it's been over 10 years now. Prove me wrong.