Synthetic oil

[denis]

I know synthec castrol is not tru syntec oil but it s good in winter,,, it
really help.
I tried Mobile 1,,, yerk .........the engine began  to make valve noise... i
when back to castrol synt and the noise stop ;-). I did tried to my other
Audi and ,, same thing.

Denis

----- Original Message -----
From: "Kevin D. Caldwell" <gembella_c4s at sbcglobal.net>
To: <balakrishnan3 at comcast.net>
Cc: "'Quattro List'" <quattro at audifans.com>
Sent: Monday, September 08, 2003 9:48 PM
Subject: RE: Synthetic oil


> That being the case, what is the deal with the "Syntec Blend" brand by
> Castrol?  I too, have been a long time Castrol user based upon the
> premise of it being a true synthetic.  And now, at least from what I'm
> hearing, you're saying that's not true.  If it truly isn't, I'll be
> switching to Mobil 1
>
>
> -----Original Message-----
> From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com] On
> Behalf Of Chander Balakrishnan
> Sent: 08 September, 2003 8:02 PM
> To: Chander Balakrishnan
> Cc: Quattro List
> Subject: RE: Synthetic oil
>
> Here is the scoop on synthetic oils.
>
> I spoke with Castrol's product manager for Syntec and this is what he
> had to
> say.  All of Castrol's "synthetic" oils in the U.S are made from mineral
> oil
> as the raw material.  Their Syntec is made from highly refined and
> processed
> mineral oil and in the processing, there are some structural changes
> which
> allow Castrol to call it a true synthetic.  In the industry this is
> referred
> to as Group III base stock.  Gp I and Gp II are used in the usual stuff
> you
> find in Wal-mart, AutoZone etc.  The Gp III base stock is very different
> from the base stock used in Mobil 1.  Mobil 1 uses Polyalphaolefin (PAO)
> as
> the base stock.  PAO is made from Linear Alpha Olefin (LAO) which in
> turn is
> made from ethylene.  The PM said that the Gp III based synthetic like
> theirs
> cannot compete with the PAO synthetic in the 0-W market, but can compete
> on
> performance in all other weights.
>
> The Castrol PM also said that all "synthetic" oils in the U.S except
> Mobil 1
> are like Castrol's.  There are some boutique makes - Redline, Amsoil etc
> that are also like Mobil 1.
>
> All the above comments apply for Passenger Car Motor Oils (PCMO).
>
> Chander
>
>
>
> -----Original Message-----
> From: Chander Balakrishnan [mailto:balakrishnan3 at comcast.net]
> Sent: Monday, September 01, 2003 10:22 PM
> To: Doug Johnson
> Subject: RE: Synthetic oil
>
>
> Doug: I have not bought Rotella yet.  Not due for an oil change for
> sometime.  I will have to check my neighborhood W-M.
> Thanks.
>
> Chander
>
>
>
> -----Original Message-----
> From: Doug Johnson [mailto:ur-quattro at msn.com]
> Sent: Saturday, August 30, 2003 10:12 PM
> To: Chander Balakrishnan
> Subject: RE: Synthetic oil
>
>
> Chander,
>
> I took a look at Wal-Mart the other day, and couldn't find synthetic
> Rotella.  What they had, and this was cases located on the top shelf,
> appeared to be dinosaur Rotella.  You are buying synthetic Rotella from
> Wal-Mart. right?
>
> Thanks!
>
>  ~ Doug
>
>
> > -----Original Message-----
> > From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
> > Behalf Of Chander Balakrishnan
> > Sent: Tuesday, August 19, 2003 5:44 PM
> > To: Quattro List
> > Subject: Synthetic oil
> >
> >
> > This is a multi-part message in MIME format.
> > --
> > By the way, Castrol Syntec is not really synthetic.  They use a highly
> > refined mineral oil as the base stock (group III).  That is relatively
> > recent, just before Castrol was acquired by BP.  I work for BP, in a
> > business unit that makes Polyalpha olefin and the raw material
> > used to make
> > PAO. PAO is the true synthetic base stock (used by M1 etc.).  PAO is
> made
> > from a small range of alpha olefins - in the C8 - C12 range (mostly
> C10 -
> > decene) as the raw material.  And these alpha olefins are synthesized
> from
> > ethylene.
> >
> > Where does one buy Rotella from ?  I have been buying M1 15W-50 from
> > Wal-Mart in 5qt jugs, for about $ 18.  IS Rotella cheaper ?
> >
> > Chander
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Message: 2
> > From: benswann at comcast.net
> > To: duandcc_forums at cox.net
> > Cc: quattro at audifans.com
> > Subject: Synthetic oil for I-5s
> > Date: Tue, 19 Aug 2003 16:21:21 +0000
> >
> > Dave,
> >
> > I have had nothing but positive results using Castrol Syntec 5W50
> > year round
> > for over 10 years.
> >
> > For non-synth Castrol 20W50 has been good, perhaps a good idea to
> > switch to
> > 10W40 in winter.  I have had problems with viscosity breakdown on
> > other oils
> > even other brands of 20W50 where the engine runs hotter and the
> > oil pressure
> > switch trips because oil thins out even in under 1000 miles of
> driving.
> >
> > Ben
> >
> > --
> > [ winmail.dat of type application/ms-tnef deleted ]
> > --
> >
> >
>
>
>