Quote Originally Posted by KCboy
sir diesoline,
what exactly is euro 1,2,3 ,4,5 standard? does this mean na diesels in euro1 standard is much dirtier than euro5? so phil diesel is dirty??????
I'm presuming you meant to ask me this...

Euro 1,2,3,4 etc. is the standard used by the gov't to refine diesels specially the sulfur content and other additives.

more here: http://www.dieselnet.com/standards/eu/ld.html