[Mgs] Mgs Digest, Vol 221, Issue 1

[Douglas Shook]

Even without a cooler, there will always be some oil left in the engine in
the various nooks and crannies, adhered to the rough textures, etc., but it
is oil that ultimately will mix and virtually "disappear" in the volume of
new oil coming in. You are putting in all new fresh additives, etc., and
the bit of oil that remains simply is inconsequential.

On Wed, Jan 21, 2026 at 1:26 PM Joel Martin <jmartiniii at yahoo.com> wrote:

> Thanks for the reply.  It is just that the nice clean oil mixed with the
> old oil left in the oil cooler is no longer nice and clean.  Where the
> transmission oil still looks like it just came out of the bottle .  Tap the
> oil cooler on the bottom looks like best bet.  Wonder why they are not made
> that way.
>
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>   1. Fw: 1973 MGB Oil Changes (Joel Martin)
>   2. Re: Fw: 1973 MGB Oil Changes (Paul Hunt)
>
>
> ----- Forwarded Message -----
> *From:* Joel Martin <jmartiniii at yahoo.com>
> *To:* MG Digest <mgs-request at 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
>
> 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 at yahoo.com> <jmartiniii at yahoo.com>
> *To:* MG Digest <mgs-request at autox.team.net> <mgs-request at 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
>
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