I've read a few articles about how professionals and car collectors prepare
vehicles for long term storage, and their rule was to always replace fuel
and oil with fresh/clean fluids before storage. I believe they stated that
the contaminants in used oil, combined with the moisture from combustion
and from the humidity that Dan mentioned, causes the oil to become slightly
acidic.  No need to leave that sitting in your engine all winter!
Cary

On Fri, Oct 8, 2021, 10:30 AM Dan N <dn92610@gmail.com> wrote:

> I'd think wait till the Spring and change oil before you resume the
> driving. Fresh oil sitting in the engine during the winter months will
> collect moisture due to humidity.
>
> On Fri, Oct 8, 2021 at 7:22 AM Jack R <jack007@comcast.net> wrote:
>
> > Any advise on timing of an oil change before or after winter storage?
> >
> > Does it make any difference as to when I do my oil change on my 2.1L
> Westy?
> > I'm due for one based on time/mileage, but wondered if I should wait
> until
> > Spring when I start driving again or should it be completed before I
> store
> > it in my insulated garage for the winter?
> >
> > Thanks!!
> >
> > Jack R.
> > 84 Westy, with 2.1L from 91 syncro
> > N. of Detroit
> >
>