tj48--
There is something about the RSC-24!
Interesting case of a major railroad and a major locomotive builder doing something utterly non-standard. Built for (now abandoned, I think) lines on Prince Edward Island (?) which were too lightly built for standard North American diesels: the sort of application that, a few years earlier, might have gotten GE 70-tonners, or a North American order for an export model... But CN was getting four FPA-2 and FPB-2 units re-built with 12-251 engines (making them virtually equivalent to the contemporaneous FPA-4 and FPB-4).(*). And MLW used the left-over 12-244 engines as the basis for these light-weight road switchers.
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Many years ago, "Trains" magazine had an occasional humorous page, with cartoon captions on railroad photos. One photo was of an engineer looking glumly out the cab window of an RSC-24, muttering "If I've told them once, I've told them a thousand times: you wash C-628s with a mild detergent, using a cold rinse."
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(*) Fresh in my mind, since I've recently asked questions about the FPA-4 (and related units) on the "Alco" forum.