Antonija  +  246606 Tue, 18 Jul 06 02:10 PM I have problems with the blue parts. Could you please help me? Thank you. Diesel fuel is prepared from (out of) fractions of petroleum and light gas oil. Important property of diesel fuel is a cetan number or diesel index, the measure for the ability of ignition of the diesel fuel. Paraffins have the biggest cetan number, paraffins have smaller, and then come naphtens, and finally aromatics. Antonija Joined on Sun, Mar 5 2006 Croatia Contributing Member 1,316

	Alan.es  +  246746 Tue, 18 Jul 06 10:19 PM Diesel fuel is prepared from fractions of petroleum and light gas oil. An important property of diesel fuel is the cetane number or diesel index, which is a measure of the ignition quality of a diesel fuel. Paraffins have the biggest cetane number, paraffins have smaller, and then come naphthenes, and finally aromatics. "Paraffins have the biggest cetane number, paraffins have smaller," - this doesn't make sense. Is there a small i- or iso- before the second 'paraffins'? Alan.es Joined on Sun, Apr 16 2006 Full Member 303

	Antonija  +  246851 Wed, 19 Jul 06 08:02 AM Sorry, it is a mistake: It should be: Paraffins have the biggest cetane number, then come naphtenes and finally aromatics. If anyone has any idea how to make this sentence sound better, please, let me know. Thank you Alan. Antonija

	Likeguslee  +  246884 Wed, 19 Jul 06 09:35 AM Paraffins have the biggest cetane number, followed by naphtenes and finally aromatics with diminishing cetane content. Likeguslee Joined on Mon, Jun 5 2006 USA Full Member 330