The Healey tappets have a slight convex crown where they ride on the cam
so they are not precicely flat. Are these still refered to as "flat
tappets"?. What are non-flat tappets? Rollers or what?
Jim Smith
----- Original Message -----
From: "Tracy Drummond" <bighealey@charter.net>
To: "Healey List" <healeys@autox.team.net>
Sent: Friday, November 03, 2006 9:53 AM
Subject: Oils and spoils
> Just got off the phone with Castrol consumer service and verified that
their
> recommendation is
>
>
>
> GTX 20W50 over .12 content of ZDDP.
>
>
>
> I have GTX 10W30 in now (for the past 10,000 miles probably) and it is
NOT
> ON THE RECOMMENDED LIST for flat tappet motors.
>
>
>
> They are sending me an official whitepaper/statement on the subject.
>
>
>
> Hummmmm perhaps a cam upgrade to a new grind over the winter..
>
>
>
> Tracy
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