All good information but I would add that Mobil 1 Truck & SUV, readily
available, is rated SAE 5W-40, API CI-4,SL/CF.  This is well within the
parameters your manufacturer requests.

Best regards,

Ron

Kim,

I took this from the tdiclub.com . I use Shell Rotella T (synthetic)
because that's what I could get locally.  I suggest visiting that
website if you need to know more about your VW TDI.   There is a wealth
of knowledge in the forums.  Start with the TDI FAQ.  Please note that
this does not apply to new 2004 PD (unit injector) models.

http://tdiclub.com/TDIFAQ/TDiFAQ-4.html

# Specifications - The oil specified for use in the Volkswagen TDi for
current models meets the "API Service CG-4" rating. This mark means
that the oil has been tested for use in Diesel (C = compression
ignition) engines to meet the requirements of a test level called "G"
in a 4-stroke engine. The oil may also have been tested for use engines
fueled by gasoline, methanol, propane, or other fuels ignited by a
spark plug (S = spark ignition). The "S" ratings (SG, SH, SJ, etc.)
have no bearing on the suitability of the oil to protect a Diesel
fueled engine from the special demands imposed by the higher
compression ratios and the tendency for all diesel engines to place
soot in the oil.

Since there is little difference internally between the earlier and
later engines, it is only prudent to use oil meeting the latest
standards, even in the earlier models. The latest standard is CH-4, and
the one previous to that is CG-4. Many oils which have CG-4 printed on
the packaging actually meet CH-4, but due to the time taken to use up
old packaging, it is only the labeling which is not up to date.
Back to Top

#Semi and full Synthetic - According to a service bulletin, Volkswagen
recommends the use of synthetic oil in the TDI engine. Herein lies the
dilemma, as if you take your Volkswagen to a dealer for service, they
may try to use an oil which is not CG-4 rated and isn't really a full
synthetic. There are a limited number of oils on the market in North
America which satisfy the following criteria: CG-4 or CH-4 rating, full
synthetic, viscosity 5w30 or 5w40. These oils are suitable for VW's
full recommended oil change interval and the viscosity range is
suitable for all climates in North America. Contrary to what dealers
may tell you, neither Mobil 1 nor Castrol Syntec fulfill all of these
requirements - and that information is right on the bottle.

The information in this section refers to API service classes which are
North American standards.  Different standards for engine oils are used
in Europe and elsewhere. It should be noted that since this vehicle was
developed in Europe, it is much easier to determine whether a European
engine oil is suitable. Any synthetic oil meeting the specification VW
505.00 is suitable for use with this engine with the full recommended
oil change interval.  The VW 505.00 is the manufacturer's own
specification, but in North America this specification is rarely seen,
so we must rely on the API grades.

Oils which are suitable for the full recommended oil change interval in
all climates include, but aren't limited to:
Mobil Delvac 1, 5w40 (full synthetic, a reformulated version of Mobil 1
which is intended for diesel engines)
Chevron Delo 400, 5w40 (full synthetic version)
Shell Rotella T (full synthetic version, not to be confused with
Rotella SB synthetic blend or regular Rotella T non-synthetic)
Amsoil Series 3000, 5w30 (full synthetic, CH-4 rated)
Amsoil High Performance, 10w40 (full synthetic, CH-4 rated)
Amsoil semi-synthetic 15w40 (CH-4 rated and high quality, but almost as
expensive as the full synthetic, and higher viscosity at low
temperatures)
Redline, synthetic version (make sure you get the type meant for diesel
engines, with the CG-4 or CH-4 rating)

There are intermediate classes of oils in between full synthetic oils
and conventional oils.  These include synthetic blends, and so-called
"Group III" hydroisomerized oils, and are also available in viscosity
ranges suitable for all climates. They include:
Shell Rotella SB (synthetic blend)
Petro-Canada Duron, various viscosity's (Group III, various grades
available, ensure CG-4 or CH-4 rating on the bottle)
Castrol Syntec 5w30, 5w40 (Group III - note that this oil is frequently
recommended by VW dealers but is NOT rated CG-4 or CH-4, and isn't a
full synthetic - which calls into question what the dealer is telling
people ... this forum is generally of the opinion that Castrol Syntec
is not the best choice for this engine)

In warm weather, a good-quality non-synthetic oil meant for diesel
engines with CG-4 or CH-4 ratings may be used. They're not suitable in
cold weather due to reduced cold-pumping properties, and it's prudent
to shorten the oil change interval because non-synthetic oils may not
resist breakdown at high temperatures as well as the synthetic oils
(remember that turbocharger). These oils are much easier to find. These
include:
Mobil Delvac 1300, 15w40
Shell Rotella T, 15w40
Chevron Delo 400, 15w40

Beware of other brands that claim to be diesel-rated or turbo-rated,
but are actually just plain cheap. Use the good stuff. If you doubt
this, ask transport truck drivers that own their rigs what they use.
Chances are it will be Delvac or Rotella.

In cold weather, if CG-4 or CH-4 rated synthetic oil cannot be found,
regular Mobil 1 rated CF in viscosity grades 0w30, 5w30, or 10w30 may
be used, but with a shortened oil change interval because this oil
doesn't have as much capability to handle soot.

So what's the deal if something else is used besides the expensive and
sometimes hard-to-find 5w40 full-synthetic CH-4 rated oil?

Conventional oils that are meant for diesels are usually viscosity SAE
15w40. That's okay in warm weather, but not in cold weather. You want
oil to reach that turbocharger as soon as possible after a cold start,
and it takes longer to get there if the oil won't pump easily.
Synthetic oils have many advantages over conventional oils, not the
least of which is better cold pumping characteristics, and hence the
common 5w40 viscosity grades.

It is possible to get some non-synthetic oils with viscosity's such as
0w30, 5w50, etc. In non-synthetic oils, these can only be achieved by
heavy use of viscosity-index modifiers, a type of additive, whereas
synthetic oils can easily achieve a viscosity range like 5w40 with
little or no use of viscosity-index modifiers. For various reasons we'd
rather not get into, it's better to have the viscosity right in the
base stock, than to tinker with the viscosity using additives.

Oils that lack the CG-4 or CH-4 rating don't have the same level of
anti-foaming and soot-dispersing capability. The best quality
diesel-engine oils deal with it and render the soot as harmless to the
engine as possible. Oils that don't meet the CG-4 or CH-4 ratings can't
handle as much soot, so you need to change them sooner.

Finally, cheaply made oils (not the same as cheaply priced ...) usually
won't have the same resistance to breakdown at high temperatures, that
good quality oil does. High temperatures are found in the turbocharger.
When oil breaks down at high temperature over a period of time, it
"cokes" or builds up deposits in the high-temperature area, which then
restrict lubrication. Bye-bye, turbo. There has been one reported turbo
failure which was traced to lubrication failure. Do a search of the
forums for "turbo failure" to find out what oil he was using...

Todd

On Feb 10, 2005, at 10:02 AM, John Hayes wrote:

> Kim & Garth Travis wrote:
>> Greetings,
>> Are there any TDI owners on list.  My owners manual says to use 5W30
>> oil, but I thought you were suppose to run DeLo in deisel engines.
>> It seems weird to run ordinary oil.
>
> Hi Kim.
>
> Assuming you're talking about a VW TDI, the answer depends on the
> model year.
>
> Up through 2003, you should use Mobil Delvac 1 which only comes in
> gallon jugs. To confuse things, Mobil also repackages this very
> product in quarts as Mobil 1 Truck & SUV. Catepiller also sells Delvac
> 1 relabeled as Cat Full Synthetic 5W-40 Oil.
>
> Do not confuse these products with Delvac1300 which is not a full
> synthetic or regular Mobil 1 which is not for diesels.
>
> For 2004 on, you *must* use a VW certified 505.01 oil. Dealers stock
> Castrol 505.01. You can also get Elf or Motul branded 505.01 oil
> online. Do NOT let anyone try to convince you that 505.00 oil "good
> enough."
>
> jh
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Todd G. Hershberger, CTS
Certified Technology Specialist
ITSMedia - Goshen College
574.674.2149 - Pager
574.535.7735 - Work

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