[s-cars] NurSC - What's loud at dawn then silent until twilight...

[Taka Mizutani]

In the Mobil 1 range, I'd run 0W40 black cap and start looking for RS4/6 K04
turbos to replace your existing setup.

Taka


On Sun, Jan 16, 2011 at 12:13 PM, Vincent <s.sikss at gmail.com> wrote:

> ... 100Kmiles K03.
>
>
>
> I’ve been urSless for a while now, but when Audi Gods and Turbo Gods start
> a
> fight, my first move is still to duck under the cover of this list’s wisdom
> rather than an allroad forum.
>
>
>
> I bought the allroad last July with perfectly silent turbos. When the
> temperature cooled down, I started to hear the soft whine of turbos in the
> light of dawn. But only for the first 5 minutes or so of driving: an aging
> turbo sound I was used to with the S-Bitch and I didn’t worried much since
> the S-Bitch has been whining softly when cold for over 100Kmiles until it
> died of unrelated sickness. Then, in the past few days, the cold whining
> turbo went quickly from soft to quite louder but still becoming silent as
> soon as the water temperature approach 60C/140F (water gauge has barely
> moved). This afternoon, after being parked inside for the day (about 60F),
> the turbo went fairly mad the first time I hit 2000rpm, barely on boost,
> almost covering all noises (traffic, engine, me), so I went limp mode until
> the water gage started to move and, sure enough, silent turbo. I even
> hammered it from 2Krpm to 4Krpm when the engine was properly warmed up, not
> a sound from the turbo.
>
>
>
> Now, from all my readings, it seems that a failing turbo goes from soft
> whine when cold to soft whine all the time, _then_ to louder and louder,
> but
> I have no BTDT. Besides, the K03 are still teens, at 100Kmiles, too young
> to
> die. So I’m wondering if it’s really that I should plan on going RS4 sooner
> than expected or could it be some oil/oil feed problem that _will_ force me
> to go RS4 sooner than expected if not fixed ASAP, something I would rather
> avoid since the RS4 budget is not yet completely, properly, barely, funded
> (read: a dime or two so far but I think I may add a quarter this month).
>
>
>
> For information, the patient is 8 years old, just passed 100Kmiles. It has
> been dealer maintained (including oil changes... and wipers!)  until I put
> my pawns on it so I expect, hope (should I, really, knowing dealers?) that
> the K03s have only seen Audi-approved synthetic oil of the recommended
> weight while in PO’s hands. Inspection on purchase revealed only very small
> traces of oil at the bottom of intake hoses and ICs. Oil has been changed
> to
> Mobil1 0W30 in the first weeks of ownership then, since early December, K03
> are seeing Mobil 1 5W30 (plain old Wal-Mart Mobil 1, no synth, no European
> formula, no snake oil), one step up the 0W30 ideal weight but still in the
> recommended weight range (0W30, 5W30 or 5W40), trying to tame down a small
> valve cover leak until the weather warms up and I can fix it. Since the
> temperature has rarely dropped below 15F in the morning this winter, I
> don’t
> think the switch 5W30 would cause that noise.
>
>
>
> So, what kind of offering do you, priests of the Turbo Gods and Audi Gods,
> think could put the Gods at peace?
>
>
>
> Thanks for reading that far.
>
>
>
>
>
> Vincent.
>
> _______________________________________________
> S-CAR-List mailing list
> http://audifans.com/mailman/listinfo/s-car-list
> http://www.audifans.com/kb/List_information
>