<VV> Best Oil & STP

[Mark Durham]

JR, most newer bottles of STP have ZDDP in them, plus other anti-wear
additives. I've seen it written on the front face of the bottle. I built up
my current engine assembling it with a 50% STP and 50% 30wt oil, plus a
ZDDP cam lube.

I think I read somewhere that one bottle of STP has about half of the ZDDP
in it as a bottle of ZDDP plus you can get from Clark's, or on Amazon. STP
seems to fill up the pores of the metal and seal up rings.  Mark Durham



On Wed, Jan 4, 2012 at 3:24 PM, J R Read <hmlinc at sbcglobal.net> wrote:

> Odd that the oil topic came up just after a little "experiment" at work.
>
> A few days ago, one of the guys had Regular oil 5W30, Mobil1 5W30, A bottle
> of STP and a flat edge (relatively heavy) screwdriver.   He dipped the
> blade
> of the screwdriver into each and had several of us (taking turns and
> cleaning hands and screwdriver each time) holding the screwdriver tip
> between thumb and forefinger with palm above and handle of screwdriver
> hanging down.  Easy to do with nothing on the blade AND with oil on it AND
> with Mobil1 on it.  But, even though it was more viscous to the touch, it
> was virtually impossible to keep the screwdriver from falling when it was
> dipped into the STP.
>
> Now, this makes me think that it might be a good idea to add some (how
> much???) STP at oil change time.  I looked at their web site and could not
> find any specifications for STP.  I was looking to see if there was a
> statement about ZDDP content, but was unable to find anything.
>
> Does anyone on VV have a clue as to ZDDP content of STP and what would be
> an
> appropriate ratio of oil (either type) to ZDDP if adding at oil change
> time.
> I'm not condoning this, just trying to investigate at this point.
>
> Thanks.
>
> Later, JR
> CCE CORSA CORVANANTICS SCG member
> '61 Rampside Standard 4/110
> '65 Monza Convertible 4/140
> "Keep the Love Alive"
>
> ----- Original Message -----
> From: <BobHelt at aol.com>
> To: <jay.pitchford at gmail.com>; <virtualvairs at corvair.org>
> Cc: <Mlevair at sbcglobal.net>
> Sent: Wednesday, January 04, 2012 1:58 PM
> Subject: Re: <VV> Best oil for Corvairs
>
>
> > I've heard that Brad Penn is not rated by the API. Is that correct? If
> so,
> > is that good?
> >
> > Regards,
> > Bob Helt
> >
> >
> > In a message dated 1/4/2012 11:09:12 A.M. US Mountain Standard Time,
> > jay.pitchford at gmail.com writes:
> >
> > Brad  Penn oil has plenty of ZDDP in it for sliding friction
> >> surfaces like  camshaft to lifter and fuel pump rod to  eccentric.
> >
>
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