Ken2, how do you know that the oil companies are giving you the best?
I think you should ask yourself if you honestly believe that the oil companies want to do any good to anything, except their own wallet.
If you believe they do, well then I guess you are living in your own dreamworld.
On the other hand, being skeptical about "snake-oil" sellers, is just healthy, but saying all of them are the same, is just plain stupid, but is very easy to do if you don't have any knowledge.
The problem is to have enough knowledge to make sound thoughts, about what is physical possible, and what is not.
Just my 2 cents.