[DeTomaso] oil grade type?

[Dave Londry]

Dead-on Charles.
Mobil1 15W50 (and only 15W50), some of the RotellaTs and most diesel 
synthetics
 have the zinc and phosphorus loading that old engines need unless 
they've been rollerized.
You can add them (ZDDP additive) but you need to know what you're 
starting with.
A true synthetic won't degrade with time (or even use), but it will 
suffer additive depletion and acid buildup
 plus water contamination unless driven hard from time to time.
Filter elements do degrade.
Time to change it all so you know what you have.
dave


 Charles Engles wrote:
> Dear Mr. Time,
>
>
>            From what little I know, I think you may have some more use to
> that oil, but then maybe not.  A year and half seems like a good time to
> change the oil.  I don't know about filter lifespan or degradation, but it
> might be an issue.
>
>           If you're using synthetic, then it is my understanding that Mobil
> 1 racing oil 15W-50 is supposed to contain much more desirable zinc for your
> flat tappets and camshaft.
>
>
>                Warmest regards, Chuck Engles
>
>
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of panteratime at aol.com
> Sent: Sunday, May 02, 2010 1:03 PM
> To: detomaso at realbig.com
> Subject: [DeTomaso] oil grade type?
>
>
>
> Folks,
> I ride the car about 200 miles a year.  I last changed the oil about 1-1/2
> years ago.  I use synthetic.   Its been so long I forgot what grade
> synthetic I used.  Can anyone let me know what a stock 72 should get?  I
> think I used mobil 1 or Gastrol synthetic with a Motorcraft FL-1A filter.  
> Oil is clean but I heard filters degrade over time?   Thanks 
>
>
>
>
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