A bike-shop
guy once told me to never use WD40 as
a lubricant for
things bicycle, but that it works fine to wash
dirt off (say) a chain,
preparatory to lubricating it. (As lube, he
recommended automatic
transmission fluid - apparently it's made
with a
good grade of oil
under very strict quality controls, and is
widely/cheaply available.)
Problem w/WD-40 and other stuff is that it will
dillute the true lubricant, and wherever metal is
coming in contact w/metal, rapid wear will ensue. Best
to keep that stuff away from machinery or any other
critical moving parts. Paint thinner would work better
at releasing junk, and at least it evaporates (much
more quickly).
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