[Biturbos4] Synthetic oil - frequency of changes

John Marshall Harrison JohnMH at uwyo.edu
Fri Dec 5 14:33:13 PST 2008

I've been using Amsoil 100% synthetic 0W-30.  Change interval has been
5000 miles +/-.  I don't worry about it if I don't change it at exactly
5000 miles.  Looking at the Amsoil website it appears the name on this
stuff is "Signature Series".  My thinking in using this is that it
appears to have the best ASTM D-4172 Four-Ball Wear test results
according to the Amsoil site.  At the time I started using it there were
questions on this list about whether Mobile 1 and some other so-called
synthetics were really 100% synthetic formulations.  Many felt this was
important for the turbo engine.

The duty cycle for my car is typically a lot of short trips around
Laramie, Wyoming with a lot of cold starts.

My understanding of the logic with higher viscosity oils in this car is
it may be appropriate for those who are tracking and racing more -
running the engine at or near its performance limits for periods of
time.  I don't do this - just drive it fast on empty or lower traffic
volume roads occasionally, conditions permitting.  Water and Oil temp
gages never go above the middle.

John M. Harrison
2001.5 B5 S4 Avant with about 65,000 miles on it - no major mechanical
problems - no oil usage or leakage       
Bridgestone Blizzak LM-25 on stock size wheels - goes very well in the
snow - no mods, car is stock
This car is still my newest vehicle and by far the coolest driving
machine I've ever had the pleasure of owning.  Cheers.

-----Original Message-----
From: Aurangzeb M. Agha [mailto:ama-list at mltp.com] 
Sent: Thursday, December 04, 2008 9:02 AM
To: John
Cc: Bi-Turbo Audi S4 Audi Fan Group; ama-list at mltp.com
Subject: Re: [Biturbos4] Synthetic oil - frequency of changes

What's your recommendation Grant?

I live in the North East and it does get chilli here...


On Wed, 3 Dec 2008, John wrote:

:I disagree, I live in California and the car is garaged... The year
round temp
:range I see is 25-110 F. This year we still haven't had our first
frost. Today's
:high was 58 & overcast, last night's low was 40.
:Grant Lenahan wrote:
:> IMO too thick for cold startup especially in a turbo car.
:> Grant
:> On Dec 3, 2008, at 3:53 PM, John wrote:
:>> Mobil 1 10W30 at factory intervals...
:>> John
:>> Aurangzeb M. Agha wrote:
:>>> Folks --
:>>> I'm driving an '01 S4 in which I put in synthetic oil.  I've been  
:>>> changing
:>>> it ever 6K miles.  I just wanted to hear back from folks:
:>>> 1.  Are you also using synthetic?
:>>> 2.  If so, how often do you change your oil?
:>>> Rgs,
:>>> Aurangzeb
:>>> --
:>>> '01 Silver S4
:> Grant Lenahan
:> glenahan at vfemail.net
:> (201) 602-4702 mobile
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