"Bruce" wrote in message
...
On Tue, 19 Jan 2010 21:04:48 +0000, Dave
wrote:

I have just been watching them and a thought crossed my mind.

How do they stop the diesel from going solid in the tanks and pipes?


In Britain there used to be a "winter grade" diesel which didn't wax
up until much lower temperatures were reached. Presumably something
similar is available in very cold climates?

There still is in the UK. In fact, as you suggest, there are several grades
for different climates.