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Jules Richardson[_2_] Jules Richardson[_2_] is offline
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Default oil-filled electric motors, topping up?



I've got an electric sewer pump which uses an oil-filled motor - the
lower seal had a tiny leak which I fixed, but it could use a little
topping up before I use it in anger (the upper bearing's *just*
protruding above the oil surface, so it doesn't need much to cover it
again).

Now, I think that the correct stuff is termed dielectric oil (which I've
been unable to find locally) - but that this *might* be the same as
transformer oil? (I've not seen the latter locally either, but at least
it lets me broaden my search!)

I also saw TNP mention recently that big transformers are filled with
mineral oil; is that true? Mineral oil I can certainly get (and indeed I
have a bottle somewhere) - unless of course not all mineral oils are
created equal, and the consumer-grade stuff is a completely different
animal :-)

cheers

Jules