Fuel production efficiency
 

Does anyone know much oil is used to produce a gallon of gasoline? A gallon of diesel? And how much energy from other sources goes into their production?
Today RobertSmalls posted this:
I'm asking because I'd like to have an idea of how much fuel I'm really pulling from the Earth's resources - Pouring 1 gallon of fuel into my tank does not mean that only 1 gallon of oil was extracted, transported and refined.

Is this what you need.

That's a great site!
So 42 gallons of crude oil produce 19 gallons of gasoline plus 10 gallons of diesel. And since they are different fractions, then the amount of one can't be reduced in order to produce more of the other? Am I right?

So why is diesel cheaper than gasoline in most parts of the world? Since there is almost twice as much gasoline "in" a barrel of crude than diesel, plus diesel is used in trucks, ships, etc., in much greater amounts than gasoline is used by cars, so there should be less diesel available than gas so it should cost more (by at least a factor of 2 or 3). Or maybe diesel is so much easier to produce, while gasoline is needed for other things?

Here's another site you can look at. I don't know about other parts of the world but in the US diesel in more expensive than gasoline. In this area it's about 20 cents. I think the Taxes on diesel are more than gasoline. 7 cents or so here in the US.

interesting stuff.
another note about diesel and gas, even though diesel claiming to use more... it can sit and vibrate on heavy duty applications with no loss, and HUGE work in comparison.

a pinhole in a gas tank drops a car by tens of mpg, and odors everyone around it.

It is kinda like the lose weight for efficency, all while not using enough resources to make a perfect boxer engine for the heavier car, for more passengers, and more chores, and comfort and durability by decades over the rest...one big puny mind we are owned by...called marketing. :rolleyes:

woops. I started ranting.

Most gasoline has been cracked from heavier fractions of the crude oil, or nudged into reduced volatility because it is one of the preferred standard products. If you start with tar sand or oil shale, you've put a lot of carbon in the air even before you fill your tank. If you don't care about cost, you can make gasoline from coal and water.

Crossposting:
How much energy does it take to produce a gallon of gasoline?

From Wikipedia:

A few years back at PRIUSchat, there was a very interesting thread about
the process of extracting gas and diesel from crude oil. The ratios can be
adjusted.

Refining Processes

...just like nuclear reactions (bombs), making gasoline depends upon whether you build it UP (fusion) or break it DOWN (fission).

...there are MANY ways of making gasoline, some much less costly than others.