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Depends on the diff. The spider gears have bronze cup washers on a stock
diff. The Detroit Locket has some bronze rings.
Bob Kramer
On Wed, Apr 15, 2020 at 4:22 PM Scott Janzen via Fot <fot@autox.team.net>
wrote:
> Where is there yellow metal/ brass alloy in these diffs?
>
> Sent from my iPhone
>
> > On Apr 15, 2020, at 5:15 PM, Randall via Fot <fot@autox.team.net> wrote=
:
> >
> > =EF=BB=BFYou should probably check with Redline; but my understanding i=
s that
> they do
> > not use the sulfur/phosphorous additive that can damage yellow metal.
> >
> > According to the white paper at
> >
> https://www.redlineoil.com/Content/files/tech/Gear%20Oil%20Tech%20Info.pd=
f
> >
> > "The extreme pressure chemistry used in many gear oils
> > can be corrosive to brass and bronze used in synchronizers
> > and bushings. Most gear oils are corrosive at
> > temperatures of 200=C2=B0F. Red Line Gear Oils are non-corrosive
> > up to 300=C2=B0F and the MTL=C2=AE in excess of 375=C2=B0F. A
> > corrosive gear oil can shorten synchronizer life by half
> > and can also contribute to rust problems."
> >
> > I don't have a link handy, but I was reading a research paper just the
> other
> > day (published in SAE Transactions) about a "dispersed solid borate"
> > additive that reportedly gave greatly reduced wear in big truck rear
> axles.
> > One of the other Redline documents on their website mentions "solid
> > microscopic particles", which could be the same thing (or not, just a
> WAG).
> >
> > -- Randall
> >
> >
> > ckproof Gear OIl All Sythetic
> >>
> >> https://www.biesheuvel.nl/product/58204-75w250-heavy-shockproo
> > f-gear-oil
> >> In general GL5 has a higher sulfur content than GL4 has, but
> >> surely GL4 does contain sulfur.
> >
> > _______________________________________________
> > fot@autox.team.net
> >
> > http://www.fot-racing.com
> >
> > Donate: http://www.team.net/donate.html
> > Archive: http://autox.team.net/archive http://www.team.net/pipermail/fo=
t
> > Unsubscribe/Manage:
> http://autox.team.net/mailman/options/fot/sjanzen@me.com
> >
> >
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> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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>
>
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<div dir=3D"ltr">Depends on the diff. The spider gears have bronze cup wash=
ers on a stock diff.=C2=A0 =C2=A0The Detroit=C2=A0Locket=C2=A0has some bron=
ze rings.<div><br clear=3D"all"><div><div dir=3D"ltr" class=3D"gmail_signat=
ure" data-smartmail=3D"gmail_signature"><div dir=3D"ltr">Bob Kramer</div></=
div></div><br></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" c=
lass=3D"gmail_attr">On Wed, Apr 15, 2020 at 4:22 PM Scott Janzen via Fot &l=
t;<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>> wrote:<b=
r></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex=
;border-left:1px solid rgb(204,204,204);padding-left:1ex">Where is there ye=
llow metal/ brass alloy in these diffs?<br>
<br>
Sent from my iPhone<br>
<br>
> On Apr 15, 2020, at 5:15 PM, Randall via Fot <<a href=3D"mailto:fot=
@autox.team.net" target=3D"_blank">fot@autox.team.net</a>> wrote:<br>
> <br>
> =EF=BB=BFYou should probably check with Redline; but my understanding =
is that they do<br>
> not use the sulfur/phosphorous additive that can damage yellow metal.<=
br>
> <br>
> According to the white paper at<br>
> <a href=3D"https://www.redlineoil.com/Content/files/tech/Gear%20Oil%20=
Tech%20Info.pdf" rel=3D"noreferrer" target=3D"_blank">https://www.redlineoi=
l.com/Content/files/tech/Gear%20Oil%20Tech%20Info.pdf</a><br>
> <br>
> "The extreme pressure chemistry used in many gear oils<br>
> can be corrosive to brass and bronze used in synchronizers<br>
> and bushings. Most gear oils are corrosive at<br>
> temperatures of 200=C2=B0F. Red Line Gear Oils are non-corrosive<br>
> up to 300=C2=B0F and the MTL=C2=AE in excess of 375=C2=B0F. A<br>
> corrosive gear oil can shorten synchronizer life by half<br>
> and can also contribute to rust problems."<br>
> <br>
> I don't have a link handy, but I was reading a research paper just=
the other<br>
> day (published in SAE Transactions) about a "dispersed solid bora=
te"<br>
> additive that reportedly gave greatly reduced wear in big truck rear a=
xles.<br>
> One of the other Redline documents on their website mentions "sol=
id<br>
> microscopic particles", which could be the same thing (or not, ju=
st a WAG).<br>
> <br>
> -- Randall <br>
> <br>
> <br>
> ckproof Gear OIl All Sythetic<br>
>> <br>
>> <a href=3D"https://www.biesheuvel.nl/product/58204-75w250-heavy-sh=
ockproo" rel=3D"noreferrer" target=3D"_blank">https://www.biesheuvel.nl/pro=
duct/58204-75w250-heavy-shockproo</a><br>
> f-gear-oil<br>
>> In general GL5 has a higher sulfur content than GL4 has, but <br>
>> surely GL4 does contain sulfur. <br>
> <br>
> _______________________________________________<br>
> <a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team=
.net</a><br>
> <br>
> <a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" target=3D"_bl=
ank">http://www.fot-racing.com</a><br>
> <br>
> Donate: <a href=3D"http://www.team.net/donate.html"; rel=3D"noreferrer"=
target=3D"_blank">http://www.team.net/donate.html</a><br>
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target=3D"_blank">http://autox.team.net/archive</a> <a href=3D"http://www.t=
eam.net/pipermail/fot" rel=3D"noreferrer" target=3D"_blank">http://www.team=
.net/pipermail/fot</a><br>
> Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailman/options/f=
ot/sjanzen@me.com" rel=3D"noreferrer" target=3D"_blank">http://autox.team.n=
et/mailman/options/fot/sjanzen@me.com</a><br>
> <br>
> <br>
_______________________________________________<br>
<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net<=
/a><br>
<br>
<a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" target=3D"_blank">=
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<br>
<br>
</blockquote></div>
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