In article
,
harry wrote:
Catalytic convertor. Apart from carbon dioxide, many of these are lower
from a car exhaust than those present in the average town.


The "cat" actually creates pollutants that weren't previously present.
http://en.wikipedia.org/wiki/Catalyt...nted_reactions
So they are not the be all and end all.

Only with poor quality petrol which isn't imported into this country.

--
*A clear conscience is usually the sign of a bad memory *

Dave Plowman London SW
To e-mail, change noise into sound.