[LISTEN] Does petrol have an expiration date?

Petrol by definition is millions of years old, says Naked Scientist Chris Smith.

Asked if it has an expiration date, Smith explains the science behind the substance and what could affect its longevity.

When we take that crude oil out of the ground by drilling a hole and feed that crude oil into a refinery, you split that crude oil up and make certain combinations of those fractions to make petrol so what is in the petrol is already millions of years old, but the blend that goes into the petrol that give it its characteristics, those things are going to be a unique combination...

Chris Smith, Naked Scientist

If you leave petrol in a sealed environment it chemically wouldn't change but obviously, you can't do that because it expands and contracts so you have to have a vented container for your petrol. That means some of the fractions will overtime evaporate from the petrol mix...

Chris Smith, Naked Scientist

So old petrol, unless it has been in a genuinely sealed environment with no prospect to escape, which would be unsafe, old petrol is not going to be good as fresh petrol. It's better to always have fresh petrol if you can.

Chris Smith, Naked Scientist

Click on the link below to hear more from Smith...


Recommended

by NEWSROOM AI
Read More
What happens to our brain when we are sleeping?

What happens to our brain when we are sleeping?

Naked Scientist Chris Smith explains what happens to the brain when we are sleeping. Does it keep active or go to sleep?

Naked Scientist: Why do we feel compelled to sing along to a song we know?

Naked Scientist: Why do we feel compelled to sing along to a song we know?

Naked Scientist, Chris Smith explains.

Naked Scientist: What is the difference between micro and macro evolution?

Naked Scientist: What is the difference between micro and macro evolution?

Naked Scientist Chris Smith answers this and other scientific questions.

'Scientists are working hard to manufacture blood in a lab'

'Scientists are working hard to manufacture blood in a lab'

The Naked Scientist says scientists have developed a new blood test that can track up to eight different cancer types.

[LISTEN] Why has no one invented an air conditioner that uses solar power?

[LISTEN] Why has no one invented an air conditioner that uses solar power?

Naked Scientist Chris Smith says it's not practical.

#NakedScientist: What causes déjà vu?

#NakedScientist: What causes déjà vu?

Naked Scientist Chris Smith explains the science behind the unnerving experience of feeling like something has happened before.

[LISTEN] Naked Scientist:  How easy is it to reverse a vasectomy?

[LISTEN] Naked Scientist: How easy is it to reverse a vasectomy?

Scientist Chris Smith explains the procedure and how it can be reversed.

[LISTEN] Naked Scientist: Here is what sleep does for your brain

[LISTEN] Naked Scientist: Here is what sleep does for your brain

Chris Smith explains how the brain accumulates various bits of 'biochemical rubbish' during the day and how sleep impact this.

[LISTEN] #NakedScientist: Very first lab-grown oesophagus implanted in mice

[LISTEN] #NakedScientist: Very first lab-grown oesophagus implanted in mice

Experiment will hopefully lead to clinical trials of food pipes for kids born with part of their oesophagus damaged or missing.

Popular articles
SA's Zozibini Tunzi simply the best, crowned Miss Universe 2019

SA's Zozibini Tunzi simply the best, crowned Miss Universe 2019

The 26-year-old is the third South African to be crowned Miss Universe and has made the country proud.

Want to start a small business? Lessons from a successful serial entrepreneur...

Want to start a small business? Lessons from a successful serial entrepreneur...

The Money Show’s Bruce Whitfield interviews Nic Haralambous, founder (at the cost of R5000!) of funky sock company Nic Harry.

Considering emigration? Financial planner discusses the affordability of leaving

Considering emigration? Financial planner discusses the affordability of leaving

Can you afford to leave South Africa? Certified Financial Planner (CFP) Barry O'Mahony on what to consider before deciding.

'SAA’s collapse plays nicely into hands of a politically constrained Ramaphosa'

'SAA’s collapse plays nicely into hands of a politically constrained Ramaphosa'

After dithering for fear of spending political capital, SAA is now out of the President’s hands, says Pieter du Toit (News24).

'Clearly those DA councillors that voted with ANC are expecting a reward'

'Clearly those DA councillors that voted with ANC are expecting a reward'

Unisa political analyst professor Lesiba Teffo weighs in on the elections that happened on Wednesday at the Johannesburg council.

There is no Ubuntu in how Khanya Cekeshe has been treated - Thuli Madonsela

There is no Ubuntu in how Khanya Cekeshe has been treated - Thuli Madonsela

Former public protector says the eight-year sentence was too harsh and it shouldn't matter that he was not a Wits student.

‘South Africans are getting poorer and poorer because of politics’

‘South Africans are getting poorer and poorer because of politics’

SAA is a classic example, says Isaah Mhlanga, Chief Economist at Alexander Forbes Investments.

[WATCH] Couple dancing in traffic has social media talking

[WATCH] Couple dancing in traffic has social media talking

Khabazela shares tweets and Facebook posts that have gone viral.

How to make your first R1 million (after that it just becomes so much easier)

How to make your first R1 million (after that it just becomes so much easier)

Rich. Wealthy. Financially free... Call it what you will; the first million is how you get there. Warren Ingram on his book...