[TR] Starting a dry engine advice sought

[Paul Dorsey]

Don’t we have flat tappet engines? Why do they need to rotate?

On Sun, Sep 9, 2018 at 2:58 PM Rye Livingston <ryel at mac.com> wrote:

> FYI - if a little zinc is good, a lot is NOT better. Things get too
> slippery and the tappets don’t rotate on the cam lobes. I learned this the
> hard way and the machine shop informed me of the error of too much zinc.
>
> So either Valvoline, Brad Penn or Kendall that have ZDDP, or half a bottle
> of Red Line break-in oil per instructions, is the way to go.
>
> Rye
>
> Sent from my iPhone
>
> On Sep 9, 2018, at 7:24 AM, Randall <tr3driver at ca.rr.com> wrote:
>
> >> Five or 10 years ago I didn't think there was much of an
> >> zinc ingredient in  Valvoline racing oil. Have things Change D?
> >
> > There was a brief period where they reduced it slightly; but Valvoline
> > Racing has always had ZDDP in it.  It's not entirely clear to me that 900
> > PPM is worse than 1100 PPM as long as you change oil frequently; more
> just
> > lets you run the oil longer before it is depleted.  But the consumer
> > reaction was apparently enough to convince them to put it back up.
> >
> > -- Randall
> >
> > ** triumphs at autox.team.net **
> >
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