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The minutes of the Board of Directors meeting of November 17th 2017 were published. The don't contain anything about the breakdown of #907 as it was one day later. But there is some information on break-in problems. Since revenue service started F125s encountered periodical malfunctions of the urea system. Metrolink has been working with EMD to replace all urea tanks. 907 and 908 were modified by EMD to increase the reliability of the DEF system. See page 97 of following link. Source: <a href="http://metrolink.granicus.com/AgendaViewer.php?view_id=3&clip_id=412">http://metrolink.granicus.com/AgendaViewer.php?view_id=3&clip_id=412</a> That can be completely independent of the real breakdown reasons. [quote user="Entropy"]New? What do you think CAT was using on their heavy equipment and power generation (mobile gen sets) ? SCR, DOC, DPF[/quote] At that time it didn't interest me if Cat was new are late or whatever to SCR. It was an argument about the need of DPF on the F125. One of Shadow's line of argument seemed to me, that Cat got it wrong without the DPF because they were new to SCR.  My argument: Cummins designed the QSK95 for the Siemens without DPF too. And they have a long experience with SCR. Regards, Volker
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