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10:32 AM
@RoryAlsop I think the author in question isn't a copy and paste spammer, as he made 25 edits to expand the text gradually. The text indicates technical interest, the style and unwillingness to correct it makes me think of something pathological..
 
10:58 AM
@Martin - very weird. You could well be right. Much of the additions have no real connection to the problem, which is very strange
 
 
1 hour later…
12:14 PM
@RoryAlsop I don't know either. But one cannot look into other people heads.. Sometimes I suspect that stackexchange is an experiment of some social science faculty..
 
1:04 PM
@Martin hahaha - I like that idea
 
 
7 hours later…
7:48 PM
@Martin - Astute observation ... plus the unwillingness to want it changed.
 
8:07 PM
@Pᴀᴜʟsᴛᴇʀ2 hi, how are you doing?
 
8:56 PM
@Martin - I'm good. You need to look at the following:
Diesel exhaust fluid (DEF) is an aqueous urea solution made with 32.5% urea and 67.5% deionized water. It is standardised as AUS 32 (aqueous urea solution) in ISO 22241. DEF is a consumable in selective catalytic reduction (SCR) that lowers NOx concentration in the diesel exhaust emissions from diesel engines.
1
A: Why do worn diesels emit black smoke?

Pᴀᴜʟsᴛᴇʀ2 Why does this happen? It happens when there's too rich of an air/fuel mixture. You usually see it happen during hard acceleration, when the engine is trying to produce more power so it can speed up. What is the process that produces these huge clouds of black smoke? I understand that t...

 
9:21 PM
@Martin - And I need to change my answer ... was thinking of DEF, not DPF, rofl!
I've updated my answer ...
 

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