In article ,
Tim Watts wrote:
On 10/03/18 22:11, Tim+ wrote:

No link, just the evidence of my own eyes. Considering the proportion
of diesels now fitted with DPFs, visibly black exhausts ought to be
disappearing fast. This is definitely not the case.

None of mine do that.

Try looking at others, then.

--
*Save the whale - I'll have it for my supper*

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