Reply to "Transformer damage from whistle diode???"

I too can echo @Chuck Sartor's observations with the diodes that I install, and those that know me know that I'm pretty true to factory in my work and so I do still install the rectifier discs quite a bit of the time as well. However, I don't think diodes are imminently destroying our transformers any faster than sparks on our pickup rollers, within our mechanical switch machines (O22), or everywhere else traditional operators accept them. I think it boils down to one of those things where in theory, sure, microscopic damage is being done, but in reality, it is insignificant overall and can be minimized with use of CRC 2-26 or 846 Carbon infused Silicone grease.