[T3] I tried seaching on Samba on the subject of engine oil .
William J
catnine09 at dslextreme.com
Mon Oct 16 19:27:19 PDT 2017
I broke it in on 40 weight Kedall before it changed into something else .
Used to get an oil light flicker at idle on hot runs.
From what I can find in conventional oils Valvoline 10/40 at least states
there is zinc on their site Castrol 20/50 GTX does not list it at all.
To get anything else there is lucas at autozone. $20 pint. If I go by my
VDO pressure gauge it reads higher than 10 PSI per 1000 RPM. I can't say
it's very accurate.
Thought next change I would try the Valvoline 10/40 and see what that
offers. I imagine it's at least as good as if not better than Castrol GTX.
----- Original Message -----
From: <Bobsnotch at aol.com>
To: <type3 at vwtype3.org>
Sent: Monday, October 16, 2017 5:34 PM
Subject: Re: [T3] I tried seaching on Samba on the subject of engine oil .
> In a message dated 10/16/2017 1:15:25 A.M. Eastern Daylight Time,
> catnine09 at dslextreme.com writes:
>
> Now since I chose all by my self to get caught up in this thought process
> , can't say I need the zinc content required for flat tappet lifters ,
> not
> sure ,seems to run the same as it has pep wise and I hear no bearing
> noise.
> Actually you do need to worry about it, because the oil companies took it
> out of the oil starting around 2000. Without the ZDDP (zinc) you're
> wearing
> the lobes off the cam. It won't wear or cause wear to the engine
> bearings,
> but it will cause wear metal to metal contact surfaces.
>
> At this point since you broke the engine in with 20W50, I'd keep using
> it,
> although I'd look for an oil WITH ZDDP in it. Your other option is to add
> the ZDDP to the oil. You can add Lucas, or go with something else like
> GM's
> EOS (Engine Oil Supplement). I use EOS, and it's not cheap at 30 bucks for
> a small pint container (I add a 1/2 pint with every oil change), but it
> beats taking out the engine, and tearing it down to replace the camshaft.
> I
> think of it as cheap insurance. I've put about 12K on it in 10 years of
> summer only driving, and that includes some hard miles in the middle of
> summer
> going to and from a Type 3 Invasion.
>
> The reason for the removal of zinc (ZDDP) was it clogged catalytic
> converters, and manufacturers switched to roller cams and away from "flat
> tappet"
> cams. This is what the GM dealer told me, and can be found researching
> oils, so it's not just something I'm pulling out of my butt. :-)
>
>
> Bob 65 Notch w/Factory Sunroof converted to IRS
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