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HI, I have a new Life-Like N scale GP20 locomotive that has maybe 3 hours on it. I love how it runs, but when it's cold and running at anything but low speed it has a terrible squeal that won't go away until it gets warmed up. Interestingly, it doesn't squeal when run backward... Is this a problem, or just a quirk in an otherwise great engine? I have two GP38's from Life-Like that also squeal when cold, but they are on a totally different level of quality than the GP20 is, so that sort of thing is almost expected from them. Also, they stop squealing within seconds of cold starting where the nice split-frame GP20 can take several trips around my layout to quiet down. I've found with all 3 locos that starting nice and slow and letting them come up to operating speed and temperature gradually eliminates this squeal, but I'm concerned that it is a sign of trouble. Can anyone help me with this. Is it a lubrication problem? Where can I learn where and how to oil diesels to prevent it? Also, I'm sure someone will mention this: I do run it uncoupled when starting cold so it isn't pulling a load... Thanks
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