[BiturboS4] Question re: 0W30 vs 5W50, both synthetic

Fri Jan 10 14:28:36 EST 2003

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I have been using Mobil 1 0W40 oil for the last two oil changes and haven't
had any problems (oil levels haven't declined due to burn off and oil temps
are consistently around 210 degrees).  Only time (lots of it) will tell how
the engine fares.

I think the important thing with this whole oil debate is NOT the oil's
lubricating effect on the engine (though it is still very important), but
RATHER the oil's lubricating and cooling effect on our turbos.  Intuitively
thinking, a lighter oil will allow quicker (and better?) lubrication and
cooling of our turbos.  That seems to me to be the important thing.  In my
experience, the rest of the engine can tolerate a wide range of oil types (I
base this on owning several cars over the years and having had everything from
dino oil and heavy or light oils - all engines were fine).
------------------------------
Carter Fields, San Francisco
2001.5
GIAC-X
Miltek 3" cat-back
Strat. shifter
Strat. HyperBoost DVs
A-pillar boost gauge
------------------------------
>From: "S Stiles"
>To: JohnMH at uwyo.edu, michael at isuzu-mods.com, vr6pilot at hotmail.com
>CC: jgc at norpak.net, biturbos4 at audifans.com
>Subject: RE: [BiturboS4] Question re: 0W30 vs 5W50, both synthetic
>Date: Thu, 09 Jan 2003 09:45:43 -0800
>
>I've been hearing bad things about the new (trisyn? supersyn?)
>Mobil1 0w30
>in particular. In fact, Mercedes has just released a bulletin
>stating that
>it's not approved for use in their cars.
>
>IIRC there's a simple way to check whether it's OK for our cars. Be
>sure it
>meets all of the specifications (not just weight) in our owners
>manual. I
>believe it's the SJ spec that the new Mobil1 doesn't meet.
>
>I'll dig up the article when I get a chance.
>
>Note that I'm using this oil at the moment, and have noted that I'm
>running
>significantly higher temperatures (~20deg) and am consuming more
>oil.
>
>The oil everyone seems to be recommending at the moment, if you can
>find it,
>is Mobil1 0w40, as it's still a "true" synthetic & meets all euro
>spec.
>What's happening with their other oils is that they are starting to
>blend
>w/Dino to decrease costs. Yes, you can no longer trust that Mobil1
>is a full
>synthetic oil.
>
>Scott.
>
>
>>From: "John M. Harrison"
>>To: Michael Kuriger ,Walter J Green Jr
>>
>>CC: jgc at norpak.net, biturbos4 at audifans.com
>>Subject: RE: [BiturboS4] Question re: 0W30 vs 5W50, both synthetic
>>Date: Thu, 09 Jan 2003 10:11:44 -0700
>>
>>This is my understanding as well. Not sure why one would use any
>>heavier than 30 weight in these cars under normal operating
>>conditions.
>>I'm going to continue to use 0-30 synthetic all year round. Hope
>>everyone had a good holiday season. We drove our S4 from Wyoming
>>to
>>western Maryland and back. The more I drive it the more I love it.
>>
>>John M. Harrison silver 2001 S4 Avant 6 spd 19,000 miles
>>
>>no mechanical difficulties, I just tend to hit deer and debris -
>>got hit
>>by a chunk of wood not three hours out of Laramie which broke the
>>bumper
>>cover at the lower grill and the plastic under cover piece. Only
>>$1000
>>plus change this time. I've become good friends with my local body
>>shop
>>and the State Farm Insurance claims folks.
>>
>>-----Original Message-----
>>From: Michael Kuriger [mailto:michael at isuzu-mods.com]
>>Sent: Thursday, January 09, 2003 9:43 AM
>>To: Walter J Green Jr
>>Cc: jgc at norpak.net; biturbos4 at audifans.com
>>Subject: Re: [BiturboS4] Question re: 0W30 vs 5W50, both synthetic
>>
>>
>>actually, you use heavier oil in the summer not winter. in winter
>>you
>>need ligher oil for cold starts. I've never heard of anyone using
>>5w50
>>weight in winter! Unless you live where it's warm like california
>>
>>-=Mike
>>
>>Walter J Green Jr wrote:
>>
>> > it's ok, as in just ok.
>> >
>> > as soon as warm weather comes around, I'd dump it in favor of
>>some
>> > 0w30 or
>> > 0w40 (mobil 1 synthetic, of course).
>> >
>> > __________
>> > WJG
>> > '01 S4
>> >
>> >
>> >
>> >
>> >
>> >> From: "James Coraci"
>> >> To:
>> >> Subject: [BiturboS4] Question re: 0W30 vs 5W50, both synthetic
>> >> Date: Thu, 9 Jan 2003 10:07:27 -0500
>> >>
>> >> Hello all,
>> >>
>> >> This week, dropped my 2002 S4 off for an oil change, asking for
>>Castrol
>> >> Syn 0W30. Picked it up and the guy informed me they used Castol
>>Syn
>>5W50
>> >> because "that is the winter equivalent."
>> >> Any thoughts as to the validity of this statement?
>> >> Any links to seasonal oil choices?
>> >>
>> >> Thanks.
>> >>
>> >> - Jim
>> >> email: jgc at norpak.net
>> >>
>> >> _______________________________________________
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>> >> BiturboS4 at audifans.com
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>> >
>> >
>> >
>> >
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