It's all bullshit. Think of how much higher diesel is and remember that diesel requires less refinement than gasoline. Where there's a dollar to be made...
I'll also mention FWIW that as a teenager I worked for a welder and spent my days out in the oilfields of Nevada. Railroad Valley primarily. I lost track early on how many 'dry hole' markers we put up, but it was alot. Now, as I understand it their entire drilling operation at that spot (that turned up nothing) was a write off...where does that money come from....?