Sir, Over half a century, ALCOs have proven themselves as one of the most reliable class of locomotives in IR. Their reliability was the reason why IR became lazy and didn't bother to improve the design or move to more advanced locomotives until the late 90's. They are far behind the EMD's in terms of performance, but it'll be grossly unfair to them if if just basing on data spread over a short time, they are branded as "loco class that fails the most" and definitely "99%" of WDM3A's don't fail with their rakes.
When the locomotive's lifetime itself is over 35 years, using the number of failures in just a few months to judge the reliability of...
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the loco class over it's life time is statistically wrong. Individual components in the loco might independently fail in a short time interval, but once everything is repaired/replaced properly, the loco might not fail for a very long time. Just using those closely bunched failures to judge reliability over several years gives a very wrong picture.