[BiturboS4] 10k service - OK

[Matt twentyV]

> 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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