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For a regularly driven MG, just change the oil & filter. Yes, there will be
a small quantity in the oil cooler (I suspect less than a quart but I
haven't measured it) but with regular oil changes it'll be fine.
If there has been a catastrophic event (blown engine) don't bother trying
to flush out the oil cooler - just install a new one with the new/rebuilt
engine.
If one is resurrecting a long dormant engine you might try using a rubber
tip blow gun to remove as much old oil as possible. Or just plan to do an
early oil change.
EjR
On Wed, Jan 21, 2026 at 2:07=E2=80=AFPM <mgs-request@autox.team.net> wrote:
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> 1. Fw: 1973 MGB Oil Changes (Joel Martin)
> 2. Re: Fw: 1973 MGB Oil Changes (Paul Hunt)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 21 Jan 2026 00:01:50 +0000 (UTC)
> From: Joel Martin <jmartiniii@yahoo.com>
> To: "MG Post on autox.team.net" <mgs@autox.team.net>
> Subject: [Mgs] Fw: 1973 MGB Oil Changes
> Message-ID: <52234406.1465199.1768953710012@mail.yahoo.com>
> Content-Type: text/plain; charset=3D"utf-8"
>
>
>
> ----- Forwarded Message ----- From: Joel Martin <jmartiniii@yahoo.com>=
To:
> MG Digest <mgs-request@autox.team.net>Sent: Friday, January 16, 2026,
> 11:35:00 AM ESTSubject: 1973 MGB Oil Changes
> I have a 1973 MGB.? Other than drill and tapping the oil cooler with a
> drain plug, how can you easily drain out the quart or so of old oil from
> the oil cooler during a oil change?
> Thanks
> Joel Martin
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> Message: 2
> Date: Wed, 21 Jan 2026 08:52:39 +0000
> From: Paul Hunt <paulbhunt73@gmail.com>
> To: mgs@autox.team.net
> Subject: Re: [Mgs] Fw: 1973 MGB Oil Changes
> Message-ID: <4b6f8c96-8c38-4459-8f4b-32fe626f8f43@gmail.com>
> Content-Type: text/plain; charset=3D"utf-8"; Format=3D"flowed"
>
> Don't bother.? It's only a small amount and what is in there has been
> circulating through your engine all the time it has been running
> presumably not doing any harm.? With fresh oil in the crankcase you
> won't know it is there.
>
> The only exception might be if the oil has been contaminated in which
> case the best thing would be to remove it and the hoses and flush them.?
> You would have to do that with the engine anyway.
>
> PaulH.
>
> On 21/01/2026 00:01, Joel Martin wrote:
> >
> >
> > ----- Forwarded Message -----
> > *From:* Joel Martin <jmartiniii@yahoo.com>
> > *To:* MG Digest <mgs-request@autox.team.net>
> > *Sent:* Friday, January 16, 2026, 11:35:00 AM EST
> > *Subject:* 1973 MGB Oil Changes
> >
> > I have a 1973 MGB.? Other than drill and tapping the oil cooler with a
> > drain plug, how can you easily drain out the quart or so of old oil
> > from the oil cooler during a oil change?
> >
> > Thanks
> >
> > Joel Martin
> >
> > _______________________________________________
> >
> > Mgs@autox.team.net
> > Donate:http://www.team.net/donate.html
> > Suggested annual donation $12.75
> >
> > Archive:http://www.team.net/pipermail/mgs http://autox.team.net/archiv=
e
> >
> > Unsubscribe:
> http://autox.team.net/mailman/options/mgs/paulbhunt73@gmail.com
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> End of Mgs Digest, Vol 221, Issue 1
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>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:large">For=
a regularly=C2=A0driven MG, just change the oil & filter. Yes, there w=
ill be a small quantity in the oil cooler (I suspect less than a quart but =
I haven't measured it) but with regular oil changes it'll be fine.=
=C2=A0</div><div class=3D"gmail_default" style=3D"font-size:large"><br></di=
v><div class=3D"gmail_default" style=3D"font-size:large">If there has been =
a catastrophic event (blown engine) don't bother trying to flush out th=
e oil cooler - just install a new one with the new/rebuilt engine.=C2=A0</d=
iv><div class=3D"gmail_default" style=3D"font-size:large"><br></div><div cl=
ass=3D"gmail_default" style=3D"font-size:large">If one is resurrecting a lo=
ng dormant engine you might try=C2=A0using a rubber tip blow gun to remove =
as much old oil as possible. Or just plan to do an early oil change.=C2=A0<=
/div><div class=3D"gmail_default" style=3D"font-size:large"><br></div><div =
class=3D"gmail_default" style=3D"font-size:large">EjR=C2=A0</div></div><br>=
<div class=3D"gmail_quote gmail_quote_container"><div dir=3D"ltr" class=3D"=
gmail_attr">On Wed, Jan 21, 2026 at 2:07=E2=80=AFPM <<a href=3D"mailto:m=
gs-request@autox.team.net">mgs-request@autox.team.net</a>> wrote:<br></d=
iv><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bord=
er-left:1px solid rgb(204,204,204);padding-left:1ex">Send Mgs mailing list =
submissions to<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"mailto:mgs@autox.team.net"; target=3D=
"_blank">mgs@autox.team.net</a><br>
<br>
To subscribe or unsubscribe via the World Wide Web, visit<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"http://autox.team.net/mailman/listin=
fo/mgs" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/mailman/=
listinfo/mgs</a><br>
or, via email, send a message with subject or body 'help' to<br>
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arget=3D"_blank">mgs-request@autox.team.net</a><br>
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You can reach the person managing the list at<br>
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get=3D"_blank">mgs-owner@autox.team.net</a><br>
<br>
When replying, please edit your Subject line so it is more specific<br>
than "Re: Contents of Mgs digest..."<br>
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et=3D"_blank">http://www.team.net/donate.html</a><br>
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<br>
Today's Topics:<br>
<br>
=C2=A0 =C2=A01. Fw: 1973 MGB Oil Changes (Joel Martin)<br>
=C2=A0 =C2=A02. Re: Fw: 1973 MGB Oil Changes (Paul Hunt)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Wed, 21 Jan 2026 00:01:50 +0000 (UTC)<br>
From: Joel Martin <<a href=3D"mailto:jmartiniii@yahoo.com"; target=3D"_bl=
ank">jmartiniii@yahoo.com</a>><br>
To: "MG Post on <a href=3D"http://autox.team.net"; rel=3D"noreferrer" t=
arget=3D"_blank">autox.team.net</a>" <<a href=3D"mailto:mgs@autox.t=
eam.net" target=3D"_blank">mgs@autox.team.net</a>><br>
Subject: [Mgs] Fw: 1973 MGB Oil Changes<br>
.com" target=3D"_blank">52234406.1465199.1768953710012@mail.yahoo.com</a>&g=
t;<br>
<br>
<br>
<br>
=C2=A0 =C2=A0----- Forwarded Message ----- From: Joel Martin <<a href=3D=
"mailto:jmartiniii@yahoo.com"; target=3D"_blank">jmartiniii@yahoo.com</a>>=
;To: MG Digest <<a href=3D"mailto:mgs-request@autox.team.net"; target=3D"=
_blank">mgs-request@autox.team.net</a>>Sent: Friday, January 16, 2026, 1=
1:35:00 AM ESTSubject: 1973 MGB Oil Changes<br>
=C2=A0I have a 1973 MGB.? Other than drill and tapping the oil cooler with =
a drain plug, how can you easily drain out the quart or so of old oil from =
the oil cooler during a oil change?<br>
Thanks<br>
Joel Martin=C2=A0 <br>
-------------- next part --------------<br>
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<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Wed, 21 Jan 2026 08:52:39 +0000<br>
From: Paul Hunt <<a href=3D"mailto:paulbhunt73@gmail.com"; target=3D"_bla=
nk">paulbhunt73@gmail.com</a>><br>
To: <a href=3D"mailto:mgs@autox.team.net"; target=3D"_blank">mgs@autox.team.=
net</a><br>
Subject: Re: [Mgs] Fw: 1973 MGB Oil Changes<br>
l.com" target=3D"_blank">4b6f8c96-8c38-4459-8f4b-32fe626f8f43@gmail.com</a>=
><br>
d"<br>
<br>
Don't bother.? It's only a small amount and what is in there has be=
en <br>
circulating through your engine all the time it has been running <br>
presumably not doing any harm.? With fresh oil in the crankcase you <br>
won't know it is there.<br>
<br>
The only exception might be if the oil has been contaminated in which <br>
case the best thing would be to remove it and the hoses and flush them.? <b=
r>
You would have to do that with the engine anyway.<br>
<br>
PaulH.<br>
<br>
On 21/01/2026 00:01, Joel Martin wrote:<br>
><br>
><br>
> ----- Forwarded Message -----<br>
> *From:* Joel Martin <<a href=3D"mailto:jmartiniii@yahoo.com"; target=
=3D"_blank">jmartiniii@yahoo.com</a>><br>
> *To:* MG Digest <<a href=3D"mailto:mgs-request@autox.team.net"; targ=
et=3D"_blank">mgs-request@autox.team.net</a>><br>
> *Sent:* Friday, January 16, 2026, 11:35:00 AM EST<br>
> *Subject:* 1973 MGB Oil Changes<br>
><br>
> I have a 1973 MGB.? Other than drill and tapping the oil cooler with a=
<br>
> drain plug, how can you easily drain out the quart or so of old oil <b=
r>
> from the oil cooler during a oil change?<br>
><br>
> Thanks<br>
><br>
> Joel Martin<br>
><br>
> _______________________________________________<br>
><br>
> <a href=3D"mailto:Mgs@autox.team.net"; target=3D"_blank">Mgs@autox.team=
.net</a><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>
> Suggested annual donation=C2=A0 $12.75<br>
><br>
> Archive:<a href=3D"http://www.team.net/pipermail/mgs"; rel=3D"noreferre=
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><br>
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