"If there is only 7%-10% of usable product in tar sands what happens to the other 90% of the material that comes down the pipeline???"


My point was that gasoline is a major priority in the oil business and the super quality Texas stuff was the first to be used (depleted).

We must settle for crud sometimes instead of crude.

Nothing goes to waste from a barrel of crude oil. What do you think we use to pave roads?