[T3] Stupid question #395 Oil change time?

Sun Jun 2 10:37:02 PDT 2019

would you consider 36,000 aged? I think 1/4 of it was freeway which here
even in the 90's was still a lot of freeway then sit and wait . The rest
was street traffic simply because of where I live and worked since I'm not
close to freeways and driving to work would have meant going way out of my
way.

On Sun, Jun 2, 2019 at 9:59 AM Keith Park <topnotch at nycap.rr.com> wrote:

> When the Squares last engine was new, I used 30wt, that was fine, 38lbs of
> oil pressure on a hot day on the highway, 12 at idle.
>
> As the engine aged it became 10W40 and that was good for a long time,
> finally with over 100K on it I switched to 25W50 as that was a racing
> engine
>
> oil and had the ZDDP in it, and that helped with the oil pressure as the
> engine continued to wear and when it was done at 165K I had about 25-26psi
> on the highway on a hot day and 5Psi at idle, hate to think what that would
> have been with the SAE30.
>
> Keith
>
>
> Topnotch Restorations
> topnotch at nycap.rr.com
> http://www.topnotchresto.com
> 71 Squareback  "Hothe"
> 65 Notchback  "El Baja Rojo"
> 93 RX7  "Redstur"
> 95 Chrysler Cirrus Lxi "Cirfogsalot"
> "hanging out at the tail end of the bell
> curve, and loving every minute of it!"
> -----Original Message-----
> From: type3-vwtype3.org [mailto:
> type3-vwtype3.org-bounces at lists.vwtype3.org]
> On Behalf Of William Jahn
> Sent: Saturday, June 01, 2019 11:05 PM
> To: type3 at vwtype3.org
> Subject: Re: [T3] Stupid question #395 Oil change time?
>
> Forgot since I don't really every drive far and long enough perhaps SAE30
> is good enough since it's really all about flow. I did read at several
> sites that you cna't mix say 20W50 with 10W40 because of the molecular
> structure is different that makes up the viscosity of each grade. If true I
> did mix 1 pint of 10W40 in because I was short on 20W50, who knew..
>
> On Sat, Jun 1, 2019 at 7:58 PM William Jahn <willjahn975 at gmail.com> wrote:
>
> >  I do understand that SAE30 might be better than SAE40 . I don't see any
> > white buildup in the breather. I do seem to hear a bit more tappet noise
> > since I changed the oil  unless I'm just much more focused it. When I
> last
> > adjusted the valves 5/30/15 around the same time I last changed the oil
> all
> > the rockers had oil in them, I pushed them down to see if the valve
> > clearance was was @.006". I suppose when I change the oil again within
> the
> > next week I should pull the valve covers just to check it out in there.
> On
> > the SAE30 I see a few different charts most agree SAE 40  the low end
> temp
> > is 50* F and high end is 113 to 122 *F. they seem to indicate that SAE30
> is
> > good to around 100* F .
> >
> > On Fri, May 31, 2019 at 10:56 AM William Jahn <willjahn975 at gmail.com>
> > wrote:
> >
> >> The odd part is all sites have reviews and there is not one on the STP
> >> brands autozone sells so people either don't bother with reviews since
> it's
> >> all BS or just use the STP and are happy with it. I just feel Valvoline
> is
> >> what it is so I went with that.
> >>
> >> On Fri, May 31, 2019 at 10:51 AM William Jahn <willjahn975 at gmail.com>
> >> wrote:
> >>
> >>>  Jim, I imagine SAE 30 would have been fine I never used 30 in this
> >>> engine which doesn't mean anything. I was more concerned of how hot it
> does
> >>> become here. The way the traffic is here there is not a time when I can
> >>> drive above 45 MPH , even on a freeway you might get to 55 or 60 for a
> mile
> >>> or 2 then it's stop and go. Just to get on a freeway I need to drive 6
> >>> miles stop and go. I realize it's the starting that produces the most
> wear.
> >>> I was watching my oil temp and pressure gauges just glancing once I had
> >>> driven 5 miles 2 days ago on this 20 mile round trip and noticed the
> temp
> >>> climbed more as I was at idle since there is not a lot of cooling air
> >>> flowing plus ambient temps rise from the heat off all the cars all
> around
> >>> me. I fell for the misconception that multi grade oil became thicker
> when
> >>> it does not so I can't say only assume that the 20W50 was in a sense
> lower
> >>> than SAE 30. I saw the same thing searching O'Reilly's site that they
> have
> >>> their own brand and saw a video of one fellow talking about house
> brands
> >>> are most likely branded name brand oil which is probably the relation
> >>> between Autozone and STP which is close to half the price on any name
> brand
> >>> oil they sell. If it is in fact good oil then I have a easy choice to
> go
> to
> >>> SAE 30 if needed. Fact is thinking about this I only recall using
> Castrol
> >>> 20W50 twice and this was when Autozone stopped selling Castrol SAE 40
> and
> >>> STP is a fairly new addition in Autozone's oil selection didn't see it
> on
> >>> their site until this year. Perhaps enough people wanted SAE 30 and 40
> >>> since they took it away years ago. I'd much prefer walking into a FLAPS
> and
> >>> purchase than having it shipped. I have 3 quarts of Valvoline 10W40
> haven't
> >>> used it. Felt it might not lube well enough  and from what I've read "
> Generally
> >>> it's better to stay away from the 10W-40s, as they have a higher
> content
> of
> >>> long-chain polymers to get the 40 rating from a thin base, and the
> polymers
> >>> are not lubricants themselves." I got this info from here.
> >>> http://www.vw-resource.com/engine_oil.html   for what it's worth.
> >>>
> >>>  I don't know why autozone used the STP name , they used have an
> >>> autozone brand name oil and perhaps placing the STP brand made it more
> >>> trustworthy and as far as I know it very well may be the same autozone
> >>> brand oil in a paid for STP labeled bottle.
> >>> "
> >>>
> >>> On Fri, May 31, 2019 at 6:54 AM Jim Adney <jadney at vwtype3.org> wrote:
> >>>
> >>>> On 30 May 2019 at 16:00, William Jahn wrote:
> >>>>
> >>>> > I found out that the STP SAE30 & 40 are made by autozone by calling
> >>>> STP
> >>>> > autozone gets to use their trade mark for a price. STP only deals
> with
> >>>> > their additives.
> >>>>
> >>>> And Autozone oil is probably made by some major brand that we would
> all
> >>>> recognize.
> >>>>
> >>>> I once had to make an emergency oil stop at an O'Rileys and was faced
> >>>> with
> >>>> a bunch of O'Rileys oil that I'd never seen before. The guy at the
> >>>> counter
> >>>> told me that it was all actually Valvoline, same oil, same additives.
> >>>> He'd been
> >>>> to the factory and watched the same oil, just put into different color
> >>>> bottles,
> >>>> coming down the line and put into different cartons. I suspect that
> all
> >>>> house
> >>>> brand oil is done this way. It could even be different makers done
> >>>> under
> >>>> different contracts in different years. It sounds like they are
> allowed
> >>>> to talk
> >>>> about this fact but not advertise it.
> >>>>
> >>>> I used to work with a guy who serviced big industrial air compressors.
> >>>> He
> >>>> managed to spec his own oil and get someone to mix and package it just
> >>>> for
> >>>> him. I suspect that oil came in 5 gallon buckets with a minimal label.
> >>>> Or
> >>>> maybe he had to buy 55 gal drums. I should ask him.
> >>>>
> >>>> --
> >>>> *******************************
> >>>> Jim Adney, jadney at vwtype3.org
> >>>> Madison, Wisconsin, USA
> >>>> *******************************
> >>>>
> >>>> _______________________________________________
> >>>> VWType3.Org mailing list - type3 at vwtype3.org
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> >>>>
> >>>
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