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Re: [WPTA] Gearbox oils, for your Sunday reading pleasure

from [Tom Stricker via Wpta] [Permanent Link][Original]
To: Jay Galbreath <tr4jay@gmail.com>, Clayton Yonker <ccyonker@gmail.com>
Subject: Re: [WPTA] Gearbox oils, for your Sunday reading pleasure
From: Tom Stricker via Wpta <wpta@autox.team.net>
Date: Mon, 7 Aug 2023 11:08:04 +0000 (UTC)
Cc: EDWARD WOODS via Wpta <wpta@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: wpta@autox.team.net
References: <406312821.96811.1691326249963@connect.xfinity.com> <213815639.120123.1691329119613@connect.xfinity.com> <CACh__AmMuWYh-=rCEbANQEouasqD8GMNagw5d1DeS5RGRCcR_g@mail.gmail.com> <CA+Sxo6ZvO9aLK7StSv1BoAhfw5TxvwStpqcV1S3s9U=zYwDSHw@mail.gmail.com> 
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 Thanks guysRed Line seems to be a safe bet. Spurred on by Ed and not remem=
bering how long since my oil has been changed, I ordered some MT90.The oil =
should arrive tomorrow.Today I'm going to gut my thermostat to see if it is=
 causing my overheating problem.I appreciate all the help.Tom    On Monday,=
 August 7, 2023, 12:14:06 AM EDT, Clayton Yonker via Wpta <wpta@autox.team.=
net> wrote: =20
=20
 After the issues I was having with a j type transmission I=E2=80=99ll neve=
r use anything other than MT-90(thanks Jay) I had previously used straight =
30 weight non detergent oil and 20/50 pennsgrade and had issues. It cleared=
 up the overdrive issue and haven=E2=80=99t had any problems since.
On Sun, Aug 6, 2023 at 6:59 PM Jay Galbreath via Wpta <wpta@autox.team.net>=
 wrote:

In the early 80=E2=80=99s BL Factory recommended that all Triumph (Rover) 5=
 speed trannys have ATF. I still recommend 30 weight non-detergent =C2=A0oi=
l for a B tranny. . Jay
On Sun, Aug 6, 2023 at 10:53 AM JIM UNDERWOOD via Wpta <wpta@autox.team.net=
> wrote:

   I found that in my MGB, the OD would slip on a high RPM shift with gear =
oil.=C2=A0 Switched to ATF and the issue was gone.=C2=A0 I don't know how m=
any times I had the engine in and out thinking it was the clutch hanging up=
.=C2=A0 Ran into the same issue on a friends 79B with OD.=C2=A0 The TR8 get=
s GM syncromesh fluid which is a light viscosity.=C2=A0 ATF works as well a=
nd many use that.=C2=A0 Put Gear oil in a Rover 5spd and you will be grindi=
ng gears until it gets hot.=C2=A0=C2=A0   Jim =20
  On 08/06/2023 8:50 AM EDT EDWARD WOODS via Wpta <wpta@autox.team.net> wro=
te:   =C2=A0   =C2=A0   For all of you still using engine oil in your Trium=
ph or MG gearboxes:   And, by the way, when=E2=80=99s the last time it=E2=
=80=99s been changed? =E2=80=9CDirt is the enemy of all machinery=E2=80=9D =
  =C2=A0   Ed Woods   =C2=A0   =C2=A0   People confuse engine oil weights w=
ith gear oil weights. They have > nothing to do with each other. A 75w gear=
 oil has about the same viscosity > {pourability} as 20w engine oil. Back i=
n the days when your cars were new oil technology expecially gear oil was r=
ather crude. 30w engine oil was=C2=A0 used because they did not have a gear=
 oil that was thin enough. Light=C2=A0 weight gear oils are fairly new. The=
 last 15 years or so. Gear oils are designed for shear stregnth. Meaning th=
ey cling to virtical surfaces. Engine oil does not. By using straight weigh=
t engine oils you are using ancient technology. It would be the same as put=
ting on rayon/nylon tires, using poor fuel etc. We use 75w/80 gear oil in a=
ll but our racing boxes. These use a 75w synthetic oil. One of the boxes, a=
 pre-war jag box had over 30,000 miles of rallies on it before it broke a g=
ear tooth. There was no evidence of abnormal brass wear on the syncros. I h=
ave never had an oil engineer in 25+ years of business tell me that hypoid =
oil attacks brass. The light weight gear oils shift better and protect your=
 gears better than any engine oil.=20
Ralph Steinberg =20
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ahoo.com


 =20
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<html><head></head><body><div class=3D"ydp6356d8afyahoo-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">Thanks guys</div><div dir=3D=
"ltr" data-setdir=3D"false">Red Line seems to be a safe bet. Spurred on by =
Ed and not remembering how long since my oil has been changed, I ordered so=
me MT90.</div><div dir=3D"ltr" data-setdir=3D"false">The oil should arrive =
tomorrow.</div><div dir=3D"ltr" data-setdir=3D"false">Today I'm going to gu=
t my thermostat to see if it is causing my overheating problem.</div><div d=
ir=3D"ltr" data-setdir=3D"false">I appreciate all the help.</div><div dir=
=3D"ltr" data-setdir=3D"false">Tom</div>
       =20
        </div><div id=3D"yahoo_quoted_1511015566" class=3D"yahoo_quoted">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
               =20
                <div>
                    On Monday, August 7, 2023, 12:14:06 AM EDT, Clayton Yon=
ker via Wpta &lt;wpta@autox.team.net&gt; wrote:
                </div>
                <div><br></div>
                <div><br></div>
                <div><div id=3D"yiv9718566144"><div><div>After the issues I=
 was having with a j type transmission I=E2=80=99ll never use anything othe=
r than MT-90(thanks Jay) I had previously used straight 30 weight non deter=
gent oil and 20/50 pennsgrade and had issues. It cleared up the overdrive i=
ssue and haven=E2=80=99t had any problems since.</div><div><br clear=3D"non=
e"><div class=3D"yiv9718566144gmail_quote"><div id=3D"yiv9718566144yqtfd112=
60" class=3D"yiv9718566144yqt4863681892"><div dir=3D"ltr" class=3D"yiv97185=
66144gmail_attr">On Sun, Aug 6, 2023 at 6:59 PM Jay Galbreath via Wpta &lt;=
<a rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:wp=
ta@autox.team.net" target=3D"_blank" href=3D"mailto:wpta@autox.team.net";>wp=
ta@autox.team.net</a>&gt; wrote:<br clear=3D"none"></div></div><blockquote =
style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:s=
olid;padding-left:1ex;border-left-color:rgb(204,204,204);" class=3D"yiv9718=
566144gmail_quote"><div id=3D"yiv9718566144yqtfd91775" class=3D"yiv97185661=
44yqt4863681892"><div>In the early 80=E2=80=99s BL Factory recommended that=
 all Triumph (Rover) 5 speed trannys have ATF. I still recommend 30 weight =
non-detergent &nbsp;oil for a B tranny. . Jay</div><div><br clear=3D"none">=
<div class=3D"yiv9718566144gmail_quote"><div dir=3D"ltr" class=3D"yiv971856=
6144gmail_attr">On Sun, Aug 6, 2023 at 10:53 AM JIM UNDERWOOD via Wpta &lt;=
<a rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:wp=
ta@autox.team.net" target=3D"_blank" href=3D"mailto:wpta@autox.team.net";>wp=
ta@autox.team.net</a>&gt; wrote:<br clear=3D"none"></div><blockquote style=
=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;=
padding-left:1ex;border-left-color:rgb(204,204,204);" class=3D"yiv971856614=
4gmail_quote"><u></u>

 =20
  =20
=20
 <div>
  <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;col=
or:rgb(51,51,51);">
   <span style=3D"font-family:helvetica;font-size:12pt;">I found that in my=
 MGB, the OD would slip on a high RPM shift with gear oil.&nbsp; Switched t=
o ATF and the issue was gone.&nbsp; I don't know how many times I had the e=
ngine in and out thinking it was the clutch hanging up.&nbsp; Ran into the =
same issue on a friends 79B with OD.&nbsp; The TR8 gets GM syncromesh fluid=
 which is a light viscosity.&nbsp; ATF works as well and many use that.&nbs=
p; Put Gear oil in a Rover 5spd and you will be grinding gears until it get=
s hot.&nbsp;&nbsp;</span></div></div><div><div style=3D"font-size:12pt;font=
-family:helvetica, arial, sans-serif;color:rgb(51,51,51);">
  </div>=20
  <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;col=
or:rgb(51,51,51);">
   <span style=3D"font-family:helvetica;font-size:12pt;">Jim</span>
  </div>=20
  <blockquote type=3D"cite">=20
   <div>
    On 08/06/2023 8:50 AM EDT EDWARD WOODS via Wpta &lt;<a rel=3D"nofollow =
noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:wpta@autox.team.net"; =
target=3D"_blank" href=3D"mailto:wpta@autox.team.net";>wpta@autox.team.net</=
a>&gt; wrote:
   </div>=20
   <div>
    &nbsp;
   </div>=20
   <div>
    &nbsp;
   </div>=20
   <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;co=
lor:rgb(51,51,51);">
    For all of you still using engine oil in your Triumph or MG gearboxes:
   </div>=20
   <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;co=
lor:rgb(51,51,51);">
    And, by the way, when=E2=80=99s the last time it=E2=80=99s been changed=
? =E2=80=9CDirt is the enemy of all machinery=E2=80=9D
   </div>=20
   <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;co=
lor:rgb(51,51,51);">
    &nbsp;
   </div>=20
   <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;co=
lor:rgb(51,51,51);">
    Ed Woods
   </div>=20
   <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;co=
lor:rgb(51,51,51);">
    &nbsp;
   </div>=20
   <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;co=
lor:rgb(51,51,51);">
    &nbsp;
   </div>=20
   <div style=3D"font-size:12pt;font-family:helvetica, arial, sans-serif;co=
lor:rgb(51,51,51);">
    People confuse engine oil weights with gear oil weights. They have &gt;=
 nothing to do with each other. A 75w gear oil has about the same viscosity=
 &gt; {pourability} as 20w engine oil. Back in the days when your cars were=
 new oil technology expecially gear oil was rather crude. 30w engine oil wa=
s&nbsp; used because they did not have a gear oil that was thin enough. Lig=
ht&nbsp; weight gear oils are fairly new. The last 15 years or so. Gear oil=
s are designed for shear stregnth. Meaning they cling to virtical surfaces.=
 Engine oil does not. By using straight weight engine oils you are using an=
cient technology. It would be the same as putting on rayon/nylon tires, usi=
ng poor fuel etc. We use 75w/80 gear oil in all but our racing boxes. These=
 use a 75w synthetic oil. One of the boxes, a pre-war jag box had over 30,0=
00 miles of rallies on it before it broke a gear tooth. There was no eviden=
ce of abnormal brass wear on the syncros. I have never had an oil engineer =
in 25+ years of business tell me that hypoid oil attacks brass. The light w=
eight gear oils shift better and protect your gears better than any engine =
oil.=20
    <br clear=3D"none">Ralph Steinberg
   </div>=20
  </blockquote>
 </div>
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