George E. Cawthon wrote:
Harry K wrote:

((snipped))
My objection to used motor oil on chainsaw bars is simpler. It is too
thin, likely to get flung off, and provide almost no protection. That's
the same objection I'd have to running it on a motorcycle, or bicycle,
chain.


That is it in a nutshell. I figure if the engineers designing them say
to use oil formulated for the use, then use it. I am sure that they
know one hell of lot more about it than I do. I would have to dig out
my manual on my new saw to be sure but I think it specifically says not
to use motor oil.

Harry K


I'll add my two cents. Oh, B.S.! You are talking
about nothing except metal rubbing on metal, a
piece of metal riding in a groove, with two pieces
of metal (the chain) riding on two flat surfaces
(the bar). The tension is highly variable, not
only at the beginning but during operation as the
chain heats up. The chain metal is hardened, the
bar is fairly hard, but easily draw filed. If you
need an engineer to figure out the lube, then you
probably need an engineer to figure out how to
lube the stick you slide across the floor.

Don't try to embue engineers with God like
knowledge. The stuff about formulated oil is
probably nothing but liability wording.

Use oil with some stickum. Are all of you going
to go to such extensive B.S. in describing what
kind of grease to use on the bar tip wheel?


I presume you follow that advice. Your vehicles must love you for not
following the recommended type oil. After all you know more than the
engineers.

Harry K


I would guess that you know nothing about modern
(even old) engines and bearing tolerances.
Otherwise you wouldn't equate a modern engine
using the same oil for 5,000 miles with a chain on
a blade using replacement oil every few minutes.


So in one use you say engineers are full of it and you don't believe
their recommendations and then in another they are god? Rather
inconsistent wouldn't you say?

Harry K


Good point! Is that what I said? Oh yeah, it was
You that said something about engineers
designing saws to use a specific oil. And I said
you were full of ****. You are on the engineer
kick, not me. Probably no engineers involved in
the oil recommendation, and they certainly didn't
design a saw to use a specific oil (kind of bass
akwards, wouldn't it be?). Maybe a chemist
designed an oil that would work with the saw, but
more likely just somebody that has used a saw, an
accountant, and a lawyer--none of whom probably
know anything about oil formulas. BTW, I have
friends who are engineers, not gods, just people
(note I didn't say men because about half of them
are women) who also don't think they are gods and
none of whom probably give a **** about chainsaws
or the oil that the manufacture recommends for the
bars, but damn if they don't all have cars.
Cheers!

Rather straining there aren't you. I don't see that I said anything
about a "specific" oil. Only that a "specific type" of oil, (e.g.,
bar/chain oil) was specified. You then went into a rant about
engineers, not me.

Harry K