--===============5962856111915816972==
boundary="----=_Part_281348_805892755.1536494964304"
------=_Part_281348_805892755.1536494964304
Content-Transfer-Encoding: 7bit
I have, on occasion, had too much of a good time, so yes I'm guessing yes
anything has a surfeit of advantage. If you're running a zinc additive I don't
think you'd need to also use racing oil. I'm just too lazy to mess with it.
And too, I have to top off the oil with fair frequency and don't want to have
to track the dilution factor by adding zinc everytime.
> On September 9, 2018 at 7:56 AM Paul Dorsey <dorpaul1@gmail.com> wrote:
>
> Why do you think the synthetic oil might have done that? I ordered
> some ZDVP from Moss, So I guess Valvoline racing one might be overkill for
> me. Can you have too much zinc?
>
> On Sun, Sep 9, 2018 at 7:46 AM TERRY SMITH < terryrs@comcast.net
> mailto:terryrs@comcast.net > wrote:
>
> > > Just my experience, but on my last engine rebuild, my lifters
> were toast, having traded much metal with the cam lobes. I'd run exclusively
> Valvoline synthetic, an otherwise fine oil except for the zinc content. Now
> I'm running Valvoline 20-50 racing oil. So far no problems, but we'll know
> for sure at the next tear down.
> >
> > Terry Smith, '59 TR3A
> > New Hampshire
> >
> > > On September 5, 2018 at 1:59 PM Randall < tr3driver@ca.rr.com
> > mailto:tr3driver@ca.rr.com > wrote:
> > >
> > >
> > >
> > > > I've been told that Valvoline Racing oil has zinc in it.
> > > > It's odd that the newer cars don't require it. In fact, why
> > > > is it important?
> > >
> > > Lots of opinions, here are mine:
> > >
> > > In a nutshell, it helps protect critical surfaces (like cam lobes
> > and
> > > lifters) in case the oil film breaks down (gets rubbed away by
> > the relative
> > > motion of parts).
> > >
> > > The TR camshaft (along with many other performance cars) is
> > actually pretty
> > > aggressive in terms of force developed between the camshaft lobe
> > and lifter
> > > during high rpm engine operation.
> > >
> > > Newer engines either use roller lifters (to eliminate the rubbing
> > between
> > > lobe and lifter) or less aggressive camshafts (that are less
> > likely to rub
> > > away the oil film).
> > >
> > > Honestly, I'm not absolutely convinced that the TR motor needs
> > the extra
> > > ZDDP. But it seems clear that many older engines do (even those
> > not
> > > particularly high performance by today's standards); and it
> > hardly seems
> > > worth taking a chance by using a lower ZDDP oil. (AFAIK, all
> > modern motor
> > > oils still contain some ZDDP, they just have lower amounts. The
> > oil
> > > industry has been searching for a suitable substitute, but I
> > haven't heard
> > > of them finding one yet.)
> > >
> > > -- Randall
> > >
> > > ** triumphs@autox.team.net mailto:triumphs@autox.team.net **
> > >
> > > Donate: http://www.team.net/donate.html
> > > Archive: http://www.team.net/pipermail/triumphs
> > http://www.team.net/archive
> > >
> > > Unsubscribe/Manage:
> > http://autox.team.net/mailman/options/triumphs/terryrs@comcast.net
> >
> > >
------=_Part_281348_805892755.1536494964304
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE html>
<html><head>
<meta charset=3D"UTF-8">
</head><body><p style=3D"font-size: 12pt; font-family: helvetica, arial, sa=
ns-serif; color: rgb(51, 51, 51);">I have, on occasion, had too much of a g=
ood time, so yes I'm guessing yes anything has a surfeit of advantage.&=
#160; If you're running a zinc additive I don't think you'd nee=
d to also use racing oil.  I'm just too lazy to mess with it. =
; And too, I have to top off the oil with fair frequency and don't want=
to have to track the dilution factor by adding zinc everytime.  <br><=
/p><blockquote type=3D"cite">On September 9, 2018 at 7:56 AM Paul Dorsey &#=
60;dorpaul1@gmail.com> wrote: <br> <br><div><div dir=3D"auto"> Why=
do you think the synthetic  oil  might have done that? I ordered=
some ZDVP from Moss, So I guess Valvoline racing one might be overkill for=
me. Can you have too much zinc?</div></div><div><br><div class=3D"ox-9a698=
5d4be-gmail_quote"><div dir=3D"ltr">On Sun, Sep 9, 2018 at 7:46 AM TERRY SM=
ITH < <a href=3D"mailto:terryrs@comcast.net";>terryrs@comcast.net</a>=
2; wrote: <br></div><blockquote>Just my experience, but on my last engine r=
ebuild, my lifters were toast, having traded much metal with the cam lobes.=
  I'd run exclusively Valvoline synthetic, an otherwise fine oil e=
xcept for the zinc content.  Now I'm running Valvoline 20-50 racin=
g oil.  So far no problems, but we'll know for sure at the next te=
ar down. <br> <br> Terry Smith, '59 TR3A <br> New Hampshire <br> <br> &=
#62; On September 5, 2018 at 1:59 PM Randall < <a href=3D"mailto:tr3dri=
ver@ca.rr.com" target=3D"_blank" rel=3D"noopener">tr3driver@ca.rr.com</a>&#=
62; wrote: <br> > <br> > <br> > <br> > > I've been =
told that Valvoline Racing oil has zinc in it.  <br> > > It=
9;s odd that the newer cars don't require it.  In fact, why <br> &=
#62; > is it important? <br> > <br> > Lots of opinions, here ar=
e mine: <br> > <br> > In a nutshell, it helps protect critical surf=
aces (like cam lobes and <br> > lifters) in case the oil film breaks do=
wn (gets rubbed away by the relative <br> > motion of parts). <br> >=
; <br> > The TR camshaft (along with many other performance cars) is ac=
tually pretty <br> > aggressive in terms of force developed between the=
camshaft lobe and lifter <br> > during high rpm engine operation. <br>=
> <br> > Newer engines either use roller lifters (to eliminate the=
rubbing between <br> > lobe and lifter) or less aggressive camshafts (=
that are less likely to rub <br> > away the oil film). <br> > <br> =
> Honestly, I'm not absolutely convinced that the TR motor needs th=
e extra <br> > ZDDP.  But it seems clear that many older engines d=
o (even those not <br> > particularly high performance by today's s=
tandards); and it hardly seems <br> > worth taking a chance by using a =
lower ZDDP oil.  (AFAIK, all modern motor <br> > oils still contai=
n some ZDDP, they just have lower amounts.  The oil <br> > industr=
y has been searching for a suitable substitute, but I haven't heard <br=
> > of them finding one yet.) <br> > <br> > -- Randall  <b=
r> > <br> > ** <a href=3D"mailto:triumphs@autox.team.net"; target=3D=
"_blank" rel=3D"noopener">triumphs@autox.team.net</a> ** <br> > <br> &#=
62; Donate: <a href=3D"http://www.team.net/donate.html"; target=3D"_blank" r=
el=3D"noopener">http://www.team.net/donate.html</a> <br> > Archive: <a =
href=3D"http://www.team.net/pipermail/triumphs"; target=3D"_blank" rel=3D"no=
opener">http://www.team.net/pipermail/triumphs</a>  <a href=3D"http://=
www.team.net/archive" target=3D"_blank" rel=3D"noopener">http://www.team.ne=
t/archive</a> <br> > <br> > Unsubscribe/Manage: <a href=3D"http://a=
utox.team.net/mailman/options/triumphs/terryrs@comcast.net" target=3D"_blan=
k" rel=3D"noopener">http://autox.team.net/mailman/options/triumphs/terryrs@=
comcast.net</a> <br></blockquote></div></div></blockquote></body></html>
=20
------=_Part_281348_805892755.1536494964304--
--===============5962856111915816972==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archive
--===============5962856111915816972==--
|