On 05/03/17 17:09, Chris Green wrote:
charles wrote:
I have been driving a diesel car for nearly 30 years (not the same one).
Originally bought for 400 mile runs up the motorway and kept because I
still do regular motorway runs - the 400 mile one is down to 2 or 3 time a
year,

Isn't that the one sort of journey where a diesel is very little if
any more economical than a petrol engine? Diesels win on economy for
stop start driving, hence the London taxi.

Nope. Diesels are most efficient at light throttle openings - i.e.
medium constant speed.


Why else would trucks have diesels?

--
Outside of a dog, a book is a man's best friend. Inside of a dog it's
too dark to read.

Groucho Marx