[s-cars] Winter oil change

[LL - NY]

I agree. The journal bearings (the mains and con rod) of the C4's were
designed with bearing clearances (which is the main factor of viscous flow)
based upon the oils of the day, of which 5 weight (cold) was pretty darned
thin around those days (considering the block was around from the bad old
days of the 2.0 liter 4 in the Audi Ur100, we're talking back to the 60's
and 70's) I can't imagine 0 weight (even cold) will put up enough of a film
to support the bearing loads of the engine. I tend to run 10W-30 all year
with the //S6, but then again I hardly run the car in the winter (or at all
these days, she needs a bit of work to get back on the road) so take it
FWIW.

LL - NY

On 11/8/08, Wylie Bean <theringmeister at triad.rr.com> wrote:
>
> I say "sometimes I wish I lived in a colder climate, sometimes not. 0W
> seems a little thin for our motors. Later cars yes, but methinks I'd stick
> with 5W-30
>
>
> Wylie Bean (via blackberry)
> 90 cq
> 91 90q20v
> 92 UrS4
> 01 allroad
>
>
> -----Original Message-----
> From: "Tony Curran" <tony.curran at sympatico.ca>
>
> Date: Sat, 8 Nov 2008 11:35:04
> To: S-Car-List at Audifans.Com<s-car-list at audifans.com>
> Subject: [s-cars] Winter oil change
>
>
> I know done to death, but winter is coming here in the big bad north and my
> local wrench is recommending 0W40 oil - he drives an A8 and previously an
> ur-S4. I've used 5W30 in the past. I've been using Elf 5W40 for summer
> months.
>
> What say you guys?
>
> Tony
> 96 S6
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