[Healeys] Healeys] Start-up, oil filters, and rebuilt engines

[michael.oritt at gmail.com (Michael Oritt)]

I was under the impression that the reduction in ZDDP was required in order
to comply with the SM-API oil standards.  If this is so how can companies
"add back" ZDDP?

Best--Michael Oritt
----------------------------------------------------

On Tue, May 24, 2011 at 9:49 AM, Schneider Mark
<mandmschneider at comcast.net>wrote:

> EditorGary,
>
> Regarding the topic of the initial running of rebuilt engines the point was
> made that some over-the-counter oil companies have begun to add ZDDP back
> to
> their 10-40 and 20-50 weight oils. Which companies are they?  If I can
> purchase oil with an adequate amount of ZDDP already in it I can stop
> adding
> it on my own.
>
> Marks 3
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