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I believe in an earlier message someone said that they use Rotella diesel
oil to get the desired zinc, etc. levels. Rotella--and other similar HD
diesel lubes--have also had their zinc, etc. levels limited by EPA
standards and are not what they used to be.
Best--Michael Oritt
On Wed, Jun 10, 2015 at 4:08 PM, Albert Seminatore <alsemus1@gmail.com>
wrote:
> The following is a response from Castrol regarding the best oil to use for
> classics. For me this clarified a lot of what I heard but didn't know the
> reasons. Hope this helps others.
>
>
>
> Classic cars with flat tappet cam engines represent a special case in
> regards to engine oil lubrication. These engines have valve train
> configurations that require elevated levels of ZDDP (zinc dialkyl
> dithiophosphate) anti-wear for proper protection of the flat tappet
> camshaft and its lifters. Insufficient concentration of ZDDP will lead to
> premature wear and failure of the camshaft and lifters. Current GF-4 and
> GF-5 fuel economy grade engine oils are designed for extended life of the
> catalytic convertors in modern passenger cars and have industry mandated
> limitations on the amount of sulfur and phosphorus within the oil.
>
>
>
> Only Castrol EDGE 5W-50 has a boosted level of ZDDP (1250 ppm) to help
> protect flat tappet cam engines in classic cars. This engine oil is a full
> synthetic, has excellent cold temperature properties, and has a high
> temperature viscosity (SAE 50) that is suitable for use in many classic car
> applications.
>
>
>
> Castrol EDGE 0W-30 oil is not recommended for use in a flat tappet cam
> engine.
>
>
>
> Castrol always recommends following the guidelines of the engine
> manufacturer for the recommended oil (i.e. SAE grade, API rating and
> manufacturer specifications) specific to your application or please consult
> your mechanic as to the suitability of the 5W-50 viscosity grade in your
> engine.
>
>
>
> Thank you again for contacting Castrol, we value your patronage!
>
>
> Castrol Consumer Relations
>
> --
> Albert Seminatore
> Mountain Falls, Pahrump, NV
> eMail: alsemus1@gmail.com
>
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--047d7bf10a74a4913205182fcb10
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:#3333ff">I bel=
ieve in an earlier message someone said that they use Rotella diesel oil to=
get the desired zinc, etc. levels.=C2=A0 Rotella--and other similar HD die=
sel lubes--have also had their zinc, etc. levels limited by EPA standards a=
nd are not what they used to be.</div><div class=3D"gmail_default" style=3D=
"color:#3333ff"><br></div><div class=3D"gmail_default" style=3D"color:#3333=
ff">Best--Michael Oritt</div><div class=3D"gmail_extra"><br><div class=3D"g=
mail_quote">On Wed, Jun 10, 2015 at 4:08 PM, Albert Seminatore <span dir=3D=
"ltr"><<a href=3D"mailto:alsemus1@gmail.com"; target=3D"_blank">alsemus1@=
gmail.com</a>></span> wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=
=3D"ltr"><p class=3D"MsoNormal"><span>The following is a response from Cast=
rol regarding the best oil to use for classics.=C2=A0 For me this clarified=
a lot of what I heard but didn't know the reasons.=C2=A0 Hope this hel=
ps others.<span style=3D"background-color:rgb(56,118,29)"><span></span></sp=
an><br></span></p><p class=3D"MsoNormal"><span><br></span></p><br><p class=
=3D"MsoNormal"><span>Classic
cars with flat tappet cam engines represent a special case in regards=20
to engine oil lubrication. These engines have valve train configurations
that require elevated levels of ZDDP (zinc dialkyl dithiophosphate)=20
anti-wear for proper protection of the flat tappet camshaft and its=20
lifters. Insufficient concentration of ZDDP will lead to premature wear=20
and failure of the camshaft and lifters. Current GF-4 and GF-5 fuel=20
economy grade engine oils are designed for extended life of the=20
catalytic convertors in modern passenger cars and have industry mandated
limitations on the amount of sulfur and phosphorus within the oil. </span>=
</p><p class=3D"MsoNormal"><span>=C2=A0</span></p><p class=3D"MsoNormal"><s=
pan>Only
Castrol EDGE 5W-50 has a boosted level of ZDDP (1250 ppm) to help=20
protect flat tappet cam engines in classic cars. This engine oil is a=20
full synthetic, has excellent cold temperature properties, and has a=20
high temperature viscosity (SAE 50) that is suitable for use in many=20
classic car applications.</span></p><p class=3D"MsoNormal"><span>=C2=A0</sp=
an></p><p class=3D"MsoNormal"><span>Castrol EDGE 0W-30 oil is not recommend=
ed for use in a flat tappet cam engine.</span></p><p class=3D"MsoNormal"><s=
pan>=C2=A0</span></p><p class=3D"MsoNormal"><span>Castrol
always recommends following the guidelines of the engine manufacturer=20
for the recommended oil (i.e. SAE grade, API rating and manufacturer=20
specifications) specific to your application or please consult your=20
mechanic as to the suitability of the 5W-50 viscosity grade in your=20
engine.</span></p><p class=3D"MsoNormal"><span>=C2=A0</span></p><p class=3D=
"MsoNormal"><span>Thank you again for contacting Castrol, we value your pat=
ronage!</span></p><p class=3D"MsoNormal"><span>=C2=A0</span></p><span>Castr=
ol Consumer Relations</span><span><font color=3D"#888888"><span><br clear=
=3D"all"></span><br>-- <span style=3D"background-color:rgb(243,243,243)"><s=
pan><span style=3D"background-color:rgb(238,238,238)"><span style=3D"backgr=
ound-color:rgb(243,243,243)"></span></span></span></span><br><div><div dir=
=3D"ltr"><div><div><span style=3D"font-family:garamond,serif">Albert Semina=
tore</span><br></div>Mountain Falls, Pahrump, NV<br></div>eMail:=C2=A0 <a h=
ref=3D"mailto:alsemus1@gmail.com"; target=3D"_blank">alsemus1@gmail.com</a><=
br></div></div>
</font></span></div>
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