I have been looking over an interesting website from a company that studies fuel prices and have discovered that the refining margin on diesel fuel has never been higher than it is right now. Historically it has been in the 15-20 cents per litre range (Website is from Canada), but now the refining margin is almost 40 cents/litre so even though the price of crude has come down, the price of diesel has stayed high. Seems like someone is protecting themselves from profits falling too much. Gasoline margins have stayed consistent, and that is why the price of gas has fallen. You should check it out
MJ Ervin & Associates Inc.
MJ Ervin & Associates Inc.