On Thu, 25 Nov 2004 09:32:45 -0500, "Ken" <kcmarcet"@"hotpop.com>
Quoted message said:I was wondering if anyone had thoughts on this? Or is it better to use
diferent / specialized lubricants on different parts of a bike? I was
thinking of something along the lines of a spray like wd-40 or something
similar.
In my long experience, WD40 is a poor lubricant for high-load items; I
somesimes use it solely on low-load stuff like rear der pivots, but
even there I find that it's better avoided. (The "WD" in the name
stands for "Water Displacement", which is what it was compounded to
accomplish; while it can serve as a light lubricant in low-load
applications, I've found that it is almost never the best choice for
that.) If WD40 is used on a high-load interface, it can actually
increase the likelihood of wear and/or siezure; Autozone's stores went
through a bunch of loaner gear and bearing pullers as a result of
people using WD40 (or clones of it) as the lube on the screw threads.
Often, it took as little as three turns under load before the screw's
thread was shredded. (Yes, I've seen this happen.)
Use the lube appropriate for the item, but if you have nothing else
available, then with the exception of those bits which require grease,
ordinary $1.50-per-quart motor oil can be safely used as a lubricant
for the rest of the moving parts in *most* cases. There are still
exceptions; when lubricating a plastic item, try to adhere to the
manufacturer's recommendations, as some plastics can be degraded by
certain lubricants...and some cables are designed and intended to be
used without any fluid lubricant.
By the way, this particular topic has been hashed out countless times
in this forum, and has resulted in some heated discussions to little
or no benefit; everyone has their preferences, and some of the advice
that will be offered by some respondents may be directly at odds with
others.
--
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