Okay, I see where you're going Jim.  No worries and I think you're right.
The oil should be in good shape in the spring if changed before winter
storage, even though it's not in the sealed factory container.  I use the
winter oil for a few local runs/timing checks etc. before changing while
getting ready for the season.  In the spring I change the oil only and not
the filter since the filter will have seen little service since the
pre-storage oil change, even though it will retain some of the winter oil.
If I had to skip one of the oil changes it would be the spring one for sure.

On Mon, Oct 11, 2021 at 8:42 AM Jim. Felder <jim.felder@gmail.com> wrote:

> Ergo is you change oil before storage in winter, there is no reason to
> change it again when it comes spring driving time. I think that issue was
> at the heart of this thread, so I wasn’t picking your thread apart. I am
> just trying to cut through the mysticism and find out if oil goes bad
> sitting over a winter. On the two counts you and I have discussed, I’d say
> it does not.
>
> Say, this list still has some life in it! This discussion takes me back 20
> years.
>
> Jim
>
> On Sun, Oct 10, 2021 at 9:48 PM Geoffrey Toye <geoffreytoye@gmail.com>
> wrote:
>
>> Yes, if you change the oil before storage then there will be no blowby
>> gas during storage.  If you don't, then the old oil will have seen lots of
>> blowby gas before storage.
>>
>> Yes, oil cans don't have an expiration date. The antioxidants are
>> consumed by an operating engine.
>>
>> On Sun, Oct 10, 2021 at 5:43 PM Jim Felder <jim.felder@gmail.com> wrote:
>>
>>>
>>>
>>> Sent from my iPhone
>>>
>>> > In response to David’s welcome and detailed analysis of acidity,
>>> water gets
>>> > into the oil system by way of the blow by gasses that pass the piston
>>> rings.
>>>
>>> So, if the car isn’t being driven during storage there can be no blowby.
>>> Hence no water in the oil. So scratch that reason, right?
>>> >
>>> > Oil contains anti oxidants that are life limited. Old oil cannot
>>> protect
>>> > your engine.
>>>
>>> I have never seen an expiration date on a can of oil. So scratch that
>>> reason as well.
>>>
>>> I could be wrong of course but I can’t see these so-called threats being
>>> realized.
>>>
>>> Jim
>>> >
>>> >>>
>>> >>
>>>
>>