[BiturboS4] And the Great Oil Debate continues...

[john sonty]

Just switched to M-1 0w40 from Amsoil 0w30 and my oil temps are
~5-10F lower.  However, according to Istook Motorsports some
Cosworth engineers (on AW), 15w50 is the choice above 45F.

It is written.*

*TM Walter Green...  shanker!


--- Matt twentyV <matt_20v at yahoo.com> wrote:
> > I just had my 10k service done. Everything checked
> > out and Audi was nice, but
> > I was bummed to see that they forgot to use my Mobil
> > 1 5W-30 synthetic oil
> > that I provided. Instead, they used Mobile 10W-30
> > that they use on all their
> > cars. I think I will drain and put in my oil just to
> > be anal.  But before I
> > do, should I get 0W-30 instead? I saw that a few of
> > you use that. Which brand
> > and where's the best place to get it
>
> I use Mobil-1 15W50 (red cap) in all my vehicles
> including the S4, mostly from habit.  I know that
> Audi specifies lighter oil for the S4, but I suspect
> that is to try to increase gas mileage.  My '91cq
> has 160k miles on it now, most of it with the 15W50.
> I did try 5W30 on that car when it had 120k, and it
> leaked oil badly and burned up a quart every 1000mi.
> With 15W50, it is more like 1qt. every 4000mi, which
> has been consistent since I got the car in '92.
> Synthetic oil is pretty robust, I think either weight
> would be fine, though track days at 100F might
> justify the heavier wieght.  I'd shy away from
> anything 0W-x for anything south of the arctic circle,
> but just my opinion.
>
> =====
> Matt Rooke
> '91cq- modified, still slow
> '00S4- stock, very fast
>
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