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Why is diesel cheaper than petrol?
Hello, I was wondering, when fractional distillation of crude oil takes place, the Diesel condenses at around 300 degrees, whereas the petrol condenses at around 150 degrees. So twice the amount of energy is required to produce the diesel, so why does it cost more?
Also diesel has a relatively higher boiling point that petrol, so in terms of combustion, will not it require more energy?
Thank you!
Also diesel has a relatively higher boiling point that petrol, so in terms of combustion, will not it require more energy?
Thank you!
Scroll to see replies
sulexk
Hello, I was wondering, when fractional distillation of crude oil takes place, the Diesel condenses at around 300 degrees, whereas the petrol condenses at around 150 degrees. So twice the amount of energy is required to produce the diesel, so why does it cost more?
Also diesel has a relatively higher boiling point that petrol, so in terms of combustion, will not it require more energy?
Thank you!
Also diesel has a relatively higher boiling point that petrol, so in terms of combustion, will not it require more energy?
Thank you!
3 seconds of googling:
http://www.petrolprices.com/why-diesel-costs-more-than-petrol.html
This article should answer your question.
goldsilvy
3 seconds of googling:
http://www.petrolprices.com/why-diesel-costs-more-than-petrol.html
This article should answer your question.
http://www.petrolprices.com/why-diesel-costs-more-than-petrol.html
This article should answer your question.
Question asks why diesel is cheaper, quote answers why diesel is more costly.
DaddyT
Question asks why diesel is cheaper, quote answers why diesel is more costly.
I thought diesel did cost more. So maybe the OP is mistaken.
)... Diesel is cheaper than petrol in France...
sulexk
Hello, I was wondering, when fractional distillation of crude oil takes place, the Diesel condenses at around 300 degrees, whereas the petrol condenses at around 150 degrees. So twice the amount of energy is required to produce the diesel, so why does it cost more?
Also diesel has a relatively higher boiling point that petrol, so in terms of combustion, will not it require more energy?
Thank you!
Also diesel has a relatively higher boiling point that petrol, so in terms of combustion, will not it require more energy?
Thank you!
Secondly, in the distillation process, the same energy is essentially applied to both- the oil is heated to say 600 degrees and then left to condense. Petrol is actually more expensive to produce (to my knowledge) because it requires further refining and anti-knocking agents to be added. Diesel is a cruder fuel and is cheaper to produce as a result.
Diesel does require more energy and more oxygen to burn fully, but it also releases more energy and the engines are more efficient. I believe the reason diesel is actually more expensive than petrol at the pump is because there is a higher tax on it as it's more efficient per-mile than petrol, so motorists have to buy less of it.
Course there's 'Red diesel' that's untaxed and about 70p/ litre retail. You're in a lot of trouble if they catch you using it in a road car though.
FWIW I also think ASDA was politely requested by the VAT man to increase the price of it's value vegetable oil cos people were starting to use it as vehicle fuel.
FWIW I also think ASDA was politely requested by the VAT man to increase the price of it's value vegetable oil cos people were starting to use it as vehicle fuel.
Pedus
Tax.
Now the real question is why is this thread in A Levels forum haha.
Now the real question is why is this thread in A Levels forum haha.
Haha yeah true.
The prices of petrol and diesel fluctuate all the time, and I mean ALL the time. In a weeks time diesel may be more expensive than petrol. In fact, where I live (near Bath) diesel IS more expensive than petrol. It depends on so many factors, notably which one's in demand the most, how much the oil retailers are having to pay for it at the time, tax etc. The actual method of producing usable petrol or deisel doesn't effect the cost all that much.
James Carter
Haha yeah true.
The prices of petrol and diesel fluctuate all the time, and I mean ALL the time. In a weeks time diesel may be more expensive than petrol. In fact, where I live (near Bath) diesel IS more expensive than petrol. It depends on so many factors, notably which one's in demand the most, how much the oil retailers are having to pay for it at the time, tax etc. The actual method of producing usable petrol or deisel doesn't effect the cost all that much.
The prices of petrol and diesel fluctuate all the time, and I mean ALL the time. In a weeks time diesel may be more expensive than petrol. In fact, where I live (near Bath) diesel IS more expensive than petrol. It depends on so many factors, notably which one's in demand the most, how much the oil retailers are having to pay for it at the time, tax etc. The actual method of producing usable petrol or deisel doesn't effect the cost all that much.
yeaaa. without tax, the price of petrol would be like 50p per litre or something around that... stupid government.
Howard
Diesel costs more than gas in the US as well.
Gas: the state of matter distinguished from the solid and liquid by relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly
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