Thanks Mike. But even now there are some inconsistancies. I saw a recent
chart of various oils and the amt of ZDDP in them. VR1, which I have been
using, was listed at a little over 1200 ppm's. Close to yours and probably
adequate, but enough to cause concern for the "real" truth.
tom
> [Original Message]
> From: Michael Salter <msalter@precisionsportscar.com>
> To: <healeys@autox.team.net>
> Date: 5/19/2007 1:37:49 PM
> Subject: RE: oils
>
> I have been very reluctant to chime in on the oils subject because it
seems
> to me that we, being those on the outside of the oil industry, are so far
> behind the 8 ball that we have little chance of really getting to the
bottom
> of the issue.
> The one thing that I do know is the answer to a recent enquiry that I made
> of Valvoline regarding their VR1 Racing Oils.
> I question was:
> "We race an 1953 Austin Healey which has flat tappets. VR1 saved our bacon
> in the 2004 Targa Newfoundland when we ran the engine at full race speed
for
> 14 km with no oil in it at all after puncturing the pan. Now we are
getting
> very concerned about the removal of zinc from oils. Can you confirm that
> your non synthetic VR1 20/50 has still got sufficient ZDDP to protect the
> cam in this irreplaceable engine?"
> And the answer that I received, which I have since confirmed with a follow
> up phone call was:
> "VR1 racing still has 1400ppm of zinc. The oils rated ILSAC GF4 were
lowered
> to 850ppm."
> I'm inclined to stick with what has worked for me.
> I have added this to my blog post on the subject.
> http://www.netbug.net/blogmichael/?p=49#comment-2981
>
>
> Michael Salter
> 100S (1955)
> 3000 Mk111(1965)
|