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Sorry, in the interest of brevity, I did not make myself clear.
What I meant was that there are no HYDRAULIC servos or plungers, etc. in =
the standard gearbox. I did not consider a pump to be in the same =
category.
My point was that where oil is used in a hydraulic capacity, viscosity =
may be an issue (small orifices, for example).
--
Max Heim
'66 MGB
PS: replying to Paul, I also NEVER said that detergent is a problem in =
gearbox oil. I specifically said that it is not necessary =E2=80=94 that =
is not at all the same thing.
> On Jan 19, 2019, at 10:46 AM, Charley Robinson via Mgs =
<mgs@autox.team.net> wrote:
>=20
>=20
> Ah, the old "splash lubrication" theory. This was the basis for the =
the idea that you would damage your gearbox if you towed the car any =
distance with the rear wheels on the ground. I often wondered if the =
proponents of this theory thought that the oil "splashed" all the way =
back to the tailshaft bearing in the non-OD gearbox. Nope, there are =
passages to send oil back there and return it. Anyway I towed my '69 =
MGB non-OD behind my motor home all the way from south TX to New England =
and back with all 4 wheels on the ground, the driveshaft connected and =
the gearbox in neutral with no ensuing problem. Funny how these myths =
take on a life of their own.
>=20
> CR
>> Anyway, backing up a paragraph or two, to my mind there is a =
significant difference between the standard transmission, which uses oil =
for splash lubrication only, and the OD transmission, which uses oil as =
hydraulic fluid with a planetary gearset, much like an automatic =
transmission. Automatic transmissions are extremely sensitive to =
viscosity =E2=80=94 I don't think you would have much luck with 90W gear =
oil in an auto trans.
>>=20
>>=20
>> _______________________________________________
>>=20
>> Donate: http://www.team.net/donate.html =
<http://www.team.net/donate.html>
>> Suggested annual donation $12.75
>>=20
>> Archive: http://www.team.net/pipermail/mgs =
<http://www.team.net/pipermail/mgs>
>>=20
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<http://autox.team.net/mailman/options/mgs/charley38@twc.com>
>=20
> _______________________________________________
>=20
> Mgs@autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation $12.75
>=20
> Archive: http://www.team.net/pipermail/mgs
>=20
> Unsubscribe: =
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Sorry, in the interest of brevity, I did not make myself =
clear.<div class=3D""><br class=3D""></div><div class=3D"">What I meant =
was that there are no HYDRAULIC servos or plungers, etc. in the standard =
gearbox. I did not consider a pump to be in the same category.</div><div =
class=3D""><br class=3D""></div><div class=3D"">My point was that where =
oil is used in a hydraulic capacity, viscosity may be an issue (small =
orifices, for example).</div><div class=3D""><br class=3D""><div =
class=3D"">
<div style=3D"color: rgb(0, 0, 0); letter-spacing: normal; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><div style=3D"color: rgb(0, 0, 0); =
letter-spacing: normal; text-align: start; text-indent: 0px; =
text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div style=3D"margin: 0px; font-size: 13px;" =
class=3D"">--</div><div style=3D"margin: 0px; font-size: 13px; =
min-height: 16px;" class=3D"">Max Heim</div><div style=3D"margin: 0px; =
font-size: 13px;" class=3D"">'66 MGB</div></div></div>
</div><div class=3D""><br class=3D"webkit-block-placeholder"></div><div =
class=3D""><br class=3D""></div><div class=3D"">PS: replying to Paul, I =
also NEVER said that detergent is a problem in gearbox oil. I =
specifically said that it is not necessary =E2=80=94 that is not at all =
the same thing.</div><div class=3D""><br class=3D""></div><div =
class=3D""><br class=3D""></div>
<br class=3D""><div><blockquote type=3D"cite" class=3D""><div =
class=3D"">On Jan 19, 2019, at 10:46 AM, Charley Robinson via Mgs <<a =
href=3D"mailto:mgs@autox.team.net"; class=3D"">mgs@autox.team.net</a>> =
wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D"">
=20
<meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3DUTF-8" class=3D"">
=20
<div text=3D"#000000" bgcolor=3D"#FFFFFF" class=3D"">
<br class=3D"">
Ah, the old "splash lubrication" theory. This was the =
basis for
the the idea that you would damage your gearbox if you towed the car
any distance with the rear wheels on the ground. I often =
wondered
if the proponents of this theory thought that the oil "splashed" all
the way back to the tailshaft bearing in the non-OD =
gearbox. Nope,
there are passages to send oil back there and return it. =
Anyway I
towed my '69 MGB non-OD behind my motor home all the way from south
TX to New England and back with all 4 wheels on the ground, the
driveshaft connected and the gearbox in neutral with no ensuing
problem. Funny how these myths take on a life of their own.<br =
class=3D"">
<br class=3D"">
CR<br class=3D"">
<blockquote type=3D"cite" =
cite=3D"mid:FBE286443FF24BD99359200685F568E5@paul" class=3D"">
<blockquote style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT:
5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px" =
class=3D"">
<div class=3D"">Anyway, backing up a paragraph or two, to my =
mind there is
a significant difference between the standard transmission,
which uses oil for splash lubrication only, and the OD
transmission, which uses oil as hydraulic fluid with a
planetary gearset, much like an automatic transmission.
Automatic transmissions are extremely sensitive to viscosity =
=E2=80=94
I don't think you would have much luck with 90W gear oil in an
auto trans.</div>
</blockquote>
<br class=3D"">
<fieldset class=3D"mimeAttachmentHeader"></fieldset>
<pre class=3D"moz-quote-pre" =
wrap=3D"">_______________________________________________
<a class=3D"moz-txt-link-abbreviated" =
href=3D"mailto:Mgs@autox.team.net";>Mgs@autox.team.net</a>
href=3D"http://www.team.net/donate.html";>http://www.team.net/donate.html</=
a>
Archive: <a class=3D"moz-txt-link-freetext" =
href=3D"http://www.team.net/pipermail/mgs";>http://www.team.net/pipermail/m=
gs</a>
Unsubscribe: <a class=3D"moz-txt-link-freetext" =
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</pre>
</blockquote>
<br class=3D"">
</div>
_______________________________________________<br class=3D""><br =
class=3D""><a href=3D"mailto:Mgs@autox.team.net"; =
class=3D"">Mgs@autox.team.net</a><br class=3D"">Donate: =
$12.75<br class=3D""><br class=3D"">Archive: =
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class=3D"">Unsubscribe: =
http://autox.team.net/mailman/options/mgs/mvheim@sonic.net<br =
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