Re: [Chrysler300] Zinc in Rotella T - FYI

[Bill Huff <czbill@xxxxxxxxxx>]

I just saw an ad in Hot Rod mag wherein Valvoline Synpower full 
synthetic motor oil "is the only synthetic formulated with longer 
lasting antiwear chemistry and it retains the beneficial zinc 
phosphorous longer."

I haven't had a chance to research it, but it would appear that 
someone is addressing the issue, or at least capatilizing (sp) on it.


Bill Huff

At 2/10/200909:39 PM, cotejohnr@xxxxxxx wrote:


>Hi all you petrochemical junkies,
>
>Larry Jett's comments on his "F" and oil pressures with subsequent 
>answers of zinc considerations prompted me to contact Shell (found 
>the website on the container of Rotella T) to determine if it still 
>protected our "antique" engines cams and lifters.
>
>Before all of you drain your Rotella T oil out of your rides, I 
>offer the below 4 emails from my correspondence with Shell that 
>indicate that we are still OK if we use Rotella T (either synthetic 
>or regular) in our old engines without additional zinc additives. 
>The 2009 zinc content is still sufficient in Rotella T to protect 
>solid lifters and cams according to Shell with 1200 ppm of zinc 
>which is thought to be the minimum for protection.
>
>So the choice is yours, add ZDDPlus zinc additive to whatever 
>non-diesel oil you use or Rotella T.
>
>Hope this helps you decide how to protect your engines.
>300ly,
>John R. Cote
>CT.
>P.S. I have no stock in Shell!
>
>-----Original Message-----
>
>From: <mailto:shelltechnical-us%40shell.com>shelltechnical-us@xxxxxxxxx
>To: <mailto:cotejohnr%40aol.com>cotejohnr@xxxxxxx
>Sent: Wed, 4 Feb 2009 4:59 pm
>Subject: Re: Rotella Ask Our Expert: Product Information
>
>On Wed, 4 Feb 2009 16:52:59 -0500 you wrote:
>
>John, both Rotella T CJ-4 oils have 1200 ppm of zinc which is 50%
>more than conventional gasoline SM/GF-4 rated oils. Thank you for
>your interest in Shell products.
>
>Richard Moore
>
> >
> > Dear Shell Technical:
> >
> >Could you please tell me what the exact zinc and phoshorus PPM
>levels are in
> >the newer API CJ-4 Rotella T product
> >AND also if it is the same or different in the Rotella T synthetic
>form? If
> >different, what are the quantities in PPM of each.
> >
> >Many articles state the need for 1200 - 1400 PPM of the zinc and
>phosphorus.
> >
> >Thank you,
> >John Cote
> >
> >
> >
> >
> >
> >
> >
> >-----Original Message-----
> >From: <mailto:shelltechnical-us%40shell.com>shelltechnical-us@xxxxxxxxx
> >To: <mailto:cotejohnr%40aol.com>cotejohnr@xxxxxxx
> >Sent: Mon, 2 Feb 2009 7:47 am
> >Subject: Re: Rotella Ask Our Expert: Product Information
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >Dear Sir,
> >
> >There was a slight reduction in zinc content from the Ci-4Plus oil
>to
> >the current API CJ-4 product. The current zinc content is well in
> >excess of the minimum recommended by many cam manufacturers (1000
> >ppm) for your application.
> >
> >Best Regards,
> >
> >Shell Technical
> >
> >
> >
> >
> >On Fri, 30 Jan 2009 23:04:08 +0000 you wrote:
> >
> >>------------------------------------------------
> >>ROTELLA.com E-mail Form
> >>------------------------------------------------
> >>NAME John R. Cote
> >>E-MAIL ADDRESS <mailto:cotejohnr%40aol.com>cotejohnr@xxxxxxx
> >>SUBJECT Product Information
> >>COMMENTS
> >>----------------------------------------------
> >>Some of us in the antique auto clubs (Chrysler 300 Club) have
> >recommended using
> >>Rotella T in our solid lifter engines because of the content of
>zinc
> >in Rotella
> >>T. 1. What is the current content of Rotella T in contrast to last
> >year two
> >>years 2007 and 2008? 2. Has the zinc content been reduced over the
> >past two
> >>years? 3. Does this pose a risk to cams and lifters in solid lifter
> >or similar
> >>gasoline engines? Is there still enough zinc to protect our engines
> >from damage
> >>to lifters and cams? I hope you can set us all straight on these
> >questions.
> >>Thank you, John
> >>----------------------------------------------
> >>
> >>
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >[Inline text/html]
>
>[Non-text portions of this message have been removed]
>
>


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