Science Questions

Sat, 22nd Oct 2005

Part of the show Social Insects, Biting Bugs and a Potted History of Honey


Simon in Tiptree asked:

What's the difference between fuel sold in the winter and in the summer?


Fuel is different between winter and summer because the conditions it is used in are different. The starting conditions are particularly different, as engines have to get going from a much lower temperature. What you can do to winter fuel is add chemicals that make the petrol vaporise at a lower temperature, which facilitates cold starting. Using a better mix makes it easier for your car to start on a very cold day.


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