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
> >
> >>>
> >>
>