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Hi - There's the spherical washers as Bob refers to, but there may also be=
yellow-metal for the thrust washers for the side gears. Later cars like th=
e TR6 got fiber thrust washers, but some of us install the bronze ones used=
in the TR3/4.
Can't speak to Spitfires, though.
If you have a locker, use the cheap stuff and change the diff oil often! An=
d when you change the oil, examine it closely. That way you stay ahead of a=
ny "issues".
Technically, the proper oils will say "yellow-metal safe" but not all that =
are safe do say so.=20
CRC StaLube is special order at the local NAPA. Perfect for street cars.
l8R,Bob Lang
On Wednesday, April 15, 2020, 5:31:22 PM EDT, Bob Kramer via Fot <fot@a=
utox.team.net> wrote: =20
=20
Depends on the diff. The spider gears have bronze cup washers on a stock d=
iff.=C2=A0 =C2=A0The Detroit=C2=A0Locket=C2=A0has some bronze rings.
Bob Kramer
On Wed, Apr 15, 2020 at 4:22 PM Scott Janzen via Fot <fot@autox.team.net> w=
rote:
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:
>=20
> =EF=BB=BFYou should probably check with Redline; but my understanding is =
that they do
> not use the sulfur/phosphorous additive that can damage yellow metal.
>=20
> According to the white paper at
> https://www.redlineoil.com/Content/files/tech/Gear%20Oil%20Tech%20Info.pd=
f
>=20
> "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."
>=20
> I don't have a link handy, but I was reading a research paper just the ot=
her
> day (published in SAE Transactions) about a "dispersed solid borate"
> additive that reportedly gave greatly reduced wear in big truck rear axle=
s.
> One of the other Redline documents on their website mentions "solid
> microscopic particles", which could be the same thing (or not, just a WAG=
).
>=20
> -- Randall=20
>=20
>=20
> ckproof Gear OIl All Sythetic
>>=20
>> https://www.biesheuvel.nl/product/58204-75w250-heavy-shockproo
> f-gear-oil
>> In general GL5 has a higher sulfur content than GL4 has, but=20
>> surely GL4 does contain sulfur.=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/sjanzen@me.=
com
>=20
>=20
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
il.com
_______________________________________________
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http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
@yahoo.com
=20
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<html><head></head><body><div class=3D"ydp9e2a43f5yahoo-style-wrap" style=
=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px=
;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false">Hi - There's the spherical w=
ashers as Bob refers to, but there may also be yellow-metal for the thrust =
washers for the side gears. Later cars like the TR6 got fiber thrust washer=
s, but some of us install the bronze ones used in the TR3/4.</div><div dir=
=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"fa=
lse">Can't speak to Spitfires, though.</div><div dir=3D"ltr" data-setdir=3D=
"false"><br></div><div dir=3D"ltr" data-setdir=3D"false">If you have a lock=
er, use the cheap stuff and change the diff oil often! And when you change =
the oil, examine it closely. That way you stay ahead of any "issues".<br></=
div><div dir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-=
setdir=3D"false">Technically, the proper oils will say "yellow-metal safe" =
but not all that are safe do say so. <br></div><div dir=3D"ltr" data-setdir=
=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"false">CRC StaLube is =
special order at the local NAPA. Perfect for street cars.<br></div><div dir=
=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"fa=
lse">l8R,</div><div dir=3D"ltr" data-setdir=3D"false">Bob Lang<br></div><di=
v><br></div>
=20
</div><div id=3D"ydp829245c2yahoo_quoted_7328075893" class=3D"ydp82=
9245c2yahoo_quoted">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
=20
<div>
On Wednesday, April 15, 2020, 5:31:22 PM EDT, Bob Krame=
r via Fot <fot@autox.team.net> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id=3D"ydp829245c2yiv1096151339"><div><div dir=3D"=
ltr">Depends on the diff. The spider gears have bronze cup washers on a sto=
ck diff. The Detroit Locket has some bronze rings.<di=
v><br clear=3D"all"><div><div class=3D"ydp829245c2yiv1096151339gmail_signat=
ure" dir=3D"ltr"><div dir=3D"ltr">Bob Kramer</div></div></div><br clear=3D"=
none"></div></div><br clear=3D"none"><div class=3D"ydp829245c2yiv1096151339=
gmail_quote"><div class=3D"ydp829245c2yiv1096151339yqt9135584331" id=3D"ydp=
829245c2yiv1096151339yqtfd77650"><div class=3D"ydp829245c2yiv1096151339gmai=
l_attr" dir=3D"ltr">On Wed, Apr 15, 2020 at 4:22 PM Scott Janzen via Fot &l=
t;<a shape=3D"rect" href=3D"mailto:fot@autox.team.net"; rel=3D"nofollow" tar=
get=3D"_blank">fot@autox.team.net</a>> wrote:<br clear=3D"none"></div></=
div><blockquote class=3D"ydp829245c2yiv1096151339gmail_quote" style=3D"marg=
in:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1e=
x;"><div class=3D"ydp829245c2yiv1096151339yqt9135584331" id=3D"ydp829245c2y=
iv1096151339yqtfd03034">Where is there yellow metal/ brass alloy in these d=
iffs?<br clear=3D"none">
<br clear=3D"none">
Sent from my iPhone<br clear=3D"none">
<br clear=3D"none">
> On Apr 15, 2020, at 5:15 PM, Randall via Fot <<a shape=3D"rect" hre=
f=3D"mailto:fot@autox.team.net"; rel=3D"nofollow" target=3D"_blank">fot@auto=
x.team.net</a>> wrote:<br clear=3D"none">
> <br clear=3D"none">
> =EF=BB=BFYou should probably check with Redline; but my understanding =
is that they do<br clear=3D"none">
> not use the sulfur/phosphorous additive that can damage yellow metal.<=
br clear=3D"none">
> <br clear=3D"none">
> According to the white paper at<br clear=3D"none">
> <a shape=3D"rect" href=3D"https://www.redlineoil.com/Content/files/tec=
h/Gear%20Oil%20Tech%20Info.pdf" rel=3D"nofollow" target=3D"_blank">https://=
www.redlineoil.com/Content/files/tech/Gear%20Oil%20Tech%20Info.pdf</a><br c=
lear=3D"none">
> <br clear=3D"none">
> "The extreme pressure chemistry used in many gear oils<br clear=3D"non=
e">
> can be corrosive to brass and bronze used in synchronizers<br clear=3D=
"none">
> and bushings. Most gear oils are corrosive at<br clear=3D"none">
> temperatures of 200=C2=B0F. Red Line Gear Oils are non-corrosive<br cl=
ear=3D"none">
> up to 300=C2=B0F and the MTL=C2=AE in excess of 375=C2=B0F. A<br clear=
=3D"none">
> corrosive gear oil can shorten synchronizer life by half<br clear=3D"n=
one">
> and can also contribute to rust problems."<br clear=3D"none">
> <br clear=3D"none">
> I don't have a link handy, but I was reading a research paper just the=
other<br clear=3D"none">
> day (published in SAE Transactions) about a "dispersed solid borate"<b=
r clear=3D"none">
> additive that reportedly gave greatly reduced wear in big truck rear a=
xles.<br clear=3D"none">
> One of the other Redline documents on their website mentions "solid<br=
clear=3D"none">
> microscopic particles", which could be the same thing (or not, just a =
WAG).<br clear=3D"none">
> <br clear=3D"none">
> -- Randall <br clear=3D"none">
> <br clear=3D"none">
> <br clear=3D"none">
> ckproof Gear OIl All Sythetic<br clear=3D"none">
>> <br clear=3D"none">
>> <a shape=3D"rect" href=3D"https://www.biesheuvel.nl/product/58204-=
75w250-heavy-shockproo" rel=3D"nofollow" target=3D"_blank">https://www.bies=
heuvel.nl/product/58204-75w250-heavy-shockproo</a><br clear=3D"none">
> f-gear-oil<br clear=3D"none">
>> In general GL5 has a higher sulfur content than GL4 has, but <br c=
lear=3D"none">
>> surely GL4 does contain sulfur. <br clear=3D"none">
> <br clear=3D"none">
> _______________________________________________<br clear=3D"none">
> <a shape=3D"rect" href=3D"mailto:fot@autox.team.net"; rel=3D"nofollow" =
target=3D"_blank">fot@autox.team.net</a><br clear=3D"none">
> <br clear=3D"none">
> <a shape=3D"rect" href=3D"http://www.fot-racing.com"; rel=3D"nofollow" =
target=3D"_blank">http://www.fot-racing.com</a><br clear=3D"none">
> <br clear=3D"none">
> Donate: <a shape=3D"rect" href=3D"http://www.team.net/donate.html"; rel=
=3D"nofollow" target=3D"_blank">http://www.team.net/donate.html</a><br clea=
r=3D"none">
> Archive: <a shape=3D"rect" href=3D"http://autox.team.net/archive"; rel=
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</div></blockquote></div></div></div><div class=3D"ydp829245c2yqt9135584331=
" id=3D"ydp829245c2yqtfd39038">____________________________________________=
___<br clear=3D"none"><a shape=3D"rect" href=3D"mailto:fot@autox.team.net"; =
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