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Re: [WPTA] Gearbox oils, now overheating problem

To: Gary Fredo <garyfredo@yahoo.com>, Gary Fredo via Wpta <wpta@autox.team.net>, Tom Stricker <guzzinut90@yahoo.com>
Subject: Re: [WPTA] Gearbox oils, now overheating problem
From: EDWARD WOODS via Wpta <wpta@autox.team.net>
Date: Tue, 8 Aug 2023 08:14:07 -0400 (EDT)
Delivered-to: mharc@autox.team.net
Delivered-to: wpta@autox.team.net
Importance: Normal
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> <238556685.436153.1691406484301@mail.yahoo.com> <532568215.2914.1691412109810@connect.xfinity.com> <2076020240.536395.1691426904605@mail.yahoo.com> <17999041.1131553.1691441072223@mail.yahoo.com>
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   Tom,
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   &nbsp;
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   My TR3 had =E2=80=9Coverheating=E2=80=9D problems for years. Turned out =
to be the gauge.
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   Now I define overheating as loss of coolant, different than running hot.
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   &nbsp;
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   Is your 3 losing coolant or just seeming to run hot?
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   Ed
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  <blockquote type=3D"cite">=20
   <div>
    On 08/07/2023 4:44 PM EDT Gary Fredo via Wpta &lt;wpta@autox.team.net&g=
t; wrote:
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    &nbsp;
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    &nbsp;
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ca Neue, Helvetica, Arial, sans-serif; font-size: 16px;">=20
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     &nbsp;
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     Tom,
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     &nbsp;
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    <div dir=3D"ltr" data-setdir=3D"false">
     Did you try putting an infrared tester on it to make sure you are real=
ly overheating?&nbsp; My gage always shows on the cold side but in reality =
the engine is around 180, where it should be.&nbsp; I'm going to fix that..=
....someday.
    </div>=20
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     &nbsp;
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    <div dir=3D"ltr" data-setdir=3D"false">
     Gary
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     &nbsp;
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     &nbsp;
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     &nbsp;
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_quoted">=20
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if; font-size: 13px; color: #26282a;">=20
     <div>
      On Monday, August 7, 2023 at 04:00:44 PM EDT, Tom Stricker via Wpta &=
lt;wpta@autox.team.net&gt; wrote:
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      &nbsp;
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      &nbsp;
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ze: 13px;">=20
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          &nbsp;
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         <div dir=3D"ltr">
          Hey guys
         </div>=20
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          Just crawled out from under the car. Waiting for the MT90 to refi=
ll the transmission.&nbsp;
         </div>=20
         <div dir=3D"ltr">
          After struggling to get the thermostat out, I found the gutw were=
 already removed. Note to self: Check maintenance records to prevent doing =
jobs twice.
         </div>=20
         <div dir=3D"ltr">
          Sadly though the overheating will require another solution. Now I=
'm wondering about waterpump updates.
         </div>=20
         <div dir=3D"ltr">
          Tom
         </div>=20
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          &nbsp;
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         <div id=3D"ydp5b02083eyiv7523300733yahoo_quoted_2415645527" class=
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          <div style=3D"font-family: 'Helvetica Neue', Helvetica, Arial, sa=
ns-serif; font-size: 13px; color: #26282a;">=20
           <div>
            On Monday, August 7, 2023, 08:42:12 AM EDT, Ed Major &lt;ejmajo=
rtr3a@comcast.net&gt; wrote:
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            &nbsp;
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            &nbsp;
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           <div>=20
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             <div>=20
              <div style=3D"font-size: 12pt; font-family: helvetica, arial,=
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               <span style=3D"font-family: helvetica; font-size: 12pt;">Tom=
, I suggest blocking the bypass hose too.</span>
              </div>=20
              <div class=3D"ydp5b02083eyiv7523300733default-style" style=3D=
"font-size: 12pt; font-family: helvetica, arial, sans-serif; color: #333333=
;">
               <span style=3D"font-family: helvetica; font-size: 12pt;">Ed =
(M)</span>
              </div>=20
              <blockquote type=3D"cite">=20
               <div id=3D"ydp5b02083eyiv7523300733yqtfd19379" class=3D"ydp5=
b02083eyiv7523300733yqt9112740644">=20
                <div>
                 On 08/07/2023 7:08 AM EDT Tom Stricker via Wpta &lt;wpta@a=
utox.team.net&gt; wrote:
                </div>=20
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                 &nbsp;
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                <div>
                 &nbsp;
                </div>=20
                <div class=3D"ydp5b02083eyiv7523300733ydp6356d8afyahoo-styl=
e-wrap" style=3D"font-family: Helvetica Neue, Helvetica, Arial, sans-serif;=
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                  &nbsp;
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                 <div dir=3D"ltr">
                  Thanks guys
                 </div>=20
                 <div dir=3D"ltr">
                  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 some MT90.
                 </div>=20
                 <div dir=3D"ltr">
                  The oil should arrive tomorrow.
                 </div>=20
                 <div dir=3D"ltr">
                  Today I'm going to gut my thermostat to see if it is caus=
ing my overheating problem.
                 </div>=20
                 <div dir=3D"ltr">
                  I appreciate all the help.
                 </div>=20
                 <div dir=3D"ltr">
                  Tom
                 </div>=20
                </div>=20
                <div id=3D"ydp5b02083eyiv7523300733yahoo_quoted_1511015566"=
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ial, sans-serif; font-size: 13px; color: #26282a;">=20
                  <div>
                   On Monday, August 7, 2023, 12:14:06 AM EDT, Clayton Yonk=
er via Wpta &lt;wpta@autox.team.net&gt; wrote:
                  </div>=20
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                   &nbsp;
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                   &nbsp;
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                  <div>=20
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                    <div>=20
                     <div>
                      After the issues I was having with a j type transmiss=
ion I=E2=80=99ll never use anything other than MT-90(thanks Jay) I had prev=
iously used straight 30 weight non detergent oil and 20/50 pennsgrade and h=
ad issues. It cleared up the overdrive issue and haven=E2=80=99t had any pr=
oblems since.
                     </div>=20
                     <div>
                      <br clear=3D"none">=20
                      <div class=3D"ydp5b02083eyiv7523300733gmail_quote">=
=20
                       <div id=3D"ydp5b02083eyiv7523300733yqtfd11260" class=
=3D"ydp5b02083eyiv7523300733yqt4863681892">=20
                        <div class=3D"ydp5b02083eyiv7523300733gmail_attr" d=
ir=3D"ltr">
                         On Sun, Aug 6, 2023 at 6:59 PM Jay Galbreath via W=
pta &lt;<a href=3D"mailto:wpta@autox.team.net"; target=3D"_blank" rel=3D"noo=
pener" shape=3D"rect">wpta@autox.team.net</a>&gt; wrote:
                        </div>=20
                       </div>=20
                       <blockquote>=20
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s=3D"ydp5b02083eyiv7523300733yqt4863681892">=20
                         <div>
                          In the early 80=E2=80=99s BL Factory recommended =
that all Triumph (Rover) 5 speed trannys have ATF. I still recommend 30 wei=
ght non-detergent &nbsp;oil for a B tranny. . Jay
                         </div>=20
                         <div>
                          <br clear=3D"none">=20
                          <div class=3D"ydp5b02083eyiv7523300733gmail_quote=
">=20
                           <div class=3D"ydp5b02083eyiv7523300733gmail_attr=
" dir=3D"ltr">
                            On Sun, Aug 6, 2023 at 10:53 AM JIM UNDERWOOD v=
ia Wpta &lt;<a href=3D"mailto:wpta@autox.team.net"; target=3D"_blank" rel=3D=
"noopener" shape=3D"rect">wpta@autox.team.net</a>&gt; wrote:
                           </div>=20
                           <blockquote>
                            <u></u>=20
                            <div>=20
                             <div style=3D"font-size: 12pt; font-family: he=
lvetica, arial, sans-serif; color: #333333;">
                              <span style=3D"font-family: helvetica; font-s=
ize: 12pt;">I found that in my MGB, the OD would slip on a high RPM shift w=
ith gear oil.&nbsp; Switched to ATF and the issue was gone.&nbsp; I don't k=
now how many times I had the engine in and out thinking it was the clutch h=
anging up.&nbsp; Ran into the same issue on a friends 79B with OD.&nbsp; Th=
e TR8 gets GM syncromesh fluid which is a light viscosity.&nbsp; ATF works =
as well and many use that.&nbsp; Put Gear oil in a Rover 5spd and you will =
be grinding gears until it gets hot.&nbsp;&nbsp;</span>
                             </div>=20
                            </div>=20
                            <div>=20
                             <div style=3D"font-size: 12pt; font-family: he=
lvetica, arial, sans-serif; color: #333333;">
                              &nbsp;
                             </div>=20
                             <div style=3D"font-size: 12pt; font-family: he=
lvetica, arial, sans-serif; color: #333333;">
                              <span style=3D"font-family: helvetica; font-s=
ize: 12pt;">Jim</span>
                             </div>=20
                             <blockquote type=3D"cite">=20
                              <div>
                              On 08/06/2023 8:50 AM EDT EDWARD WOODS via Wp=
ta &lt;<a href=3D"mailto:wpta@autox.team.net"; target=3D"_blank" rel=3D"noop=
ener" shape=3D"rect">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: h=
elvetica, arial, sans-serif; color: #333333;">
                              For all of you still using engine oil in your=
 Triumph or MG gearboxes:
                              </div>=20
                              <div style=3D"font-size: 12pt; font-family: h=
elvetica, arial, sans-serif; color: #333333;">
                              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: h=
elvetica, arial, sans-serif; color: #333333;">
                              &nbsp;
                              </div>=20
                              <div style=3D"font-size: 12pt; font-family: h=
elvetica, arial, sans-serif; color: #333333;">
                              Ed Woods
                              </div>=20
                              <div style=3D"font-size: 12pt; font-family: h=
elvetica, arial, sans-serif; color: #333333;">
                              &nbsp;
                              </div>=20
                              <div style=3D"font-size: 12pt; font-family: h=
elvetica, arial, sans-serif; color: #333333;">
                              &nbsp;
                              </div>=20
                              <div style=3D"font-size: 12pt; font-family: h=
elvetica, arial, sans-serif; color: #333333;">
                              People confuse engine oil weights with gear o=
il weights. They have &gt; nothing to do with each other. A 75w gear oil ha=
s about the same viscosity &gt; {pourability} as 20w engine oil. Back in th=
e days when your cars were new oil technology expecially gear oil was rathe=
r crude. 30w engine oil was&nbsp; used because they did not have a gear oil=
 that was thin enough. Light&nbsp; weight gear oils are fairly new. The las=
t 15 years or so. Gear oils are designed for shear stregnth. Meaning they c=
ling to virtical surfaces. Engine oil does not. By using straight weight en=
gine oils you are using ancient technology. It would be the same as putting=
 on rayon/nylon tires, using poor fuel etc. We use 75w/80 gear oil in all b=
ut 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 gear =
tooth. There was no evidence 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 weight gear oils shift better and protect your gea=
rs better than any engine oil.=20
                              <br clear=3D"none">Ralph Steinberg
                              </div>=20
                             </blockquote>=20
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