[s-cars] Re: [acna_pcc] Still on 4 cylinders...

[Theodore Chen]

15W-50 in a biturbo S4?  that seems pretty thick.  doesn't
audi recommend 0W-40 or 5W-40?

http://www.audiusa.com/common/images/Audi_Approved_Oil_Chart.pdf

my UrS4 gets 15W-50, and my biturbo S4 gets 5W-40.  both
synthetic.

-teddy

--- Bruce <bruce.cranford at comcast.net> wrote:

> Jim;
> I have a 2000 S4, used Mobil 1, 15-50 since it was new, with OEM oil 
> filter.  I have had no problems that I can trace to the oil.  Good luck 
> in tracking down the problem.
> Bruce Cranford
> 
> AUDIJIM at aol.com wrote:
> 
> >S-heads,
> >
> >Here's a new one for you. I changed the oil in my S4. I used an OE Audi 
> >filter and Mobil 1 15-50. Now the car runs worse than it did before I
> changed the 
> >oil. It used to run on 4 cylinders as soon as you start it. Actually, it
> starts 
> >on 5 and then drops #4 until it warms up a bit and them hits on all 5. Now
> it 
> >runs on 4 for a lot longer duration than it used to. I'm seriously thinking 
> >of swapping another AAN I have on a stand into the car over Christmas break 
> >from work. I have off from the 24th through 03 JAN. I'll swap over all the
> RS2 
> >stuff and see what happens. I'm at a total loss here for this problem. I'm 
> >either tracking down a cylinder/piston problem or a cylinder head problem at
> this 
> >point. What throws me for a loop is the starting on 5 cylinders and always 
> >dropping #4. Even when I run the car on 4 cylinders, it starts to even out
> over 
> >3000 RPM. But I think it's only feeling like it is, as soon as I shift up,
> the 
> >RPM drops and I feel the missing cylinder. Back to the beginning, how could
> an 
> >oil change effect the running condition so much? I do not know what
> viscosity 
> >the previous owner used, and this was my first oil change since I purchased 
> >the car.
> >
> >Jim
> >
> >
> >[Non-text portions of this message have been removed]
> >
> >
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