[thackney]

So basically about 20 gallons of that crude is able to produce regular gasoline ?

Yes, but the rest isn't waste. The other products have value as well.

and to top that off to make it more costly they add in there some kind of blends therefore use up more crude ?

Don't think of it as first making gasoline then using more energy to change that. It is more a case of making a variety of gasoline blending components to start with, then mixing the ingredients in the proportions to match different requirements.

[American Constitutionalist]

" Yes, but the rest isn't waste. The other products have value as well. "

Yup, I am aware of that.
Other fuels, petrol chemicals, plastics, heating fuels, jet fuels, and so many other products.
So that's helping American production with the new oil boom is the cost of some of those production plants running on natural gas for electricity, and ? the raw materials from petroleum.

[American Constitutionalist]

" Don't think of it as first making gasoline then using more energy to change that. It is more a case of making a variety of gasoline blending components to start with, then mixing the ingredients in the proportions to match different requirements. "
I call it pisswater blends that damage engines if the engines were not designed to run on it.