The Shell Rotella oil is an excellent heavy duty oil. Unfortunately it does
the PH additive for diesel are not needed in a gasoline engine and the extra
additives and zinc kill catalytic converters. It also should no longer be
used in 2007 and later heavy duty Diesel engines that need the ULSD fuel.
There is even new formulae Delvac 1 and Rotella synthetic for that.

If you really want to know what is going on in your oil you have to do the
oil testing. Anything else is just imagination.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Cullen Stewart
Sent: Tuesday, November 11, 2008 10:58 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Mobil-1 shortage

This is my 3rd reply to this question and I have agreed 3 times. I use
Rotella 15w-40 in my inline VW's which is regarded as the best by my VW tech
for the older I4 1.8L which have an oil pressure problem as they age. The
rotella seems to stay cleaner longer in older engines.
----- Original Message -----
From: "Jake de Villiers" <crescentbeachguitar@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, November 11, 2008 10:10 PM
Subject: Re: Mobil-1 shortage

> +1 on the diesel truck oil.  I've been using nothing but 15W-40 Rotella T
> or
> Castrol for over 25 years going back to my road racing days and never had
> an
> issue.
>
> On Tue, Nov 11, 2008 at 5:47 PM, Mike S <mikes@flatsurface.com> wrote:
>
>> At 03:01 PM 11/11/2008, Jim Felder wrote...
>>
>>> Maybe. I don't know for sure that an oil that you use in your car over
>>> a wide range of conditions is necessarily inferior to an oil designed
>>> to run a few hours flat-out in a very carefully designed mechanical
>>> environment. I don't know that it's not true, either, but it's
>>> probably worth looking into.
>>>
>>
>> IMO, people are opinionated/emotional about oil because it's the most
>> basic engine maintenance item under their control. When's the last time
>> you heard of an engine failing due to the brand of oil used (other than
>> truly exceptional conditions, like sludging, properly associated with
>> poor engine design)?
>>
>> The only concern (again, IMO) is the EPA related reduction in ZDDP, a
>> friction reducer important to flat tappet engines. I use a diesel (Cx)
>> rated oil, since they're allowed to have more (Shell Rotella Synthetic
>> 5w-40, if anyone cares). Other than that, modern oils are magnitudes
>> better than what 20 year old engines were designed to use. Modern oils
>> are 4-5 generations improved.
>>
>
>
>
> --
> Jake
> 1984 Vanagon GL
> 1986 Westy Weekender "Dixie"
> Crescent Beach, BC
> www.crescentbeachguitar.com
> http://subyjake.googlepages.com/mydixiedarlin%27

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