Date: Fri, 15 Mar 2013 14:06:12 -0500
Reply-To: mcneely4@COX.NET
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dave Mcneely <mcneely4@COX.NET>
Subject: Re: '87 Westy - Oil Change, out of hibernation
In-Reply-To: <BAY152-ds143B5ABC5BC5D5D34FAF31A0ED0@phx.gbl>
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---- Dennis Haynes <d23haynes57@HOTMAIL.COM> wrote:
> Again, at 100C the 20w-50 should have higher viscosity than straight 40. Outside temperature has minimal effect on oil temperature unless the radiator is saturated or the effects of running the air conditioning or higher speeds for longer times takes over.
BTW, the "higher speeds" for long running times that I am talking about are 60 mph. The long running times are hours. Flat or nearly so highway (I-40 in Texas Panhandle and Oklahoma. Very interesting situation a couple of years ago when I was still trying to figure out Vanagon driving: In New Mexico, temperatures around 95 F, running NW on US 87 toward Raton, oil pressure on the low end of what I thought it should be, and dropping more than I thought it should at idle (as I pulled off for fuel and a rest). Let the engine rest a bit, too, then headed on toward Raton Pass on I-25. Oil pressure running at around 18-20 psi. Headed up the pass and into a thunderstorm. Outside temperature dropped to around 40 F, with rain, hail, and snow. Snow plows working the pass (July). Oil pressure immediately rose to 40 psi WHILE STILL CLIMBING the pass, where it remained until I was back on flatter terrain and hotter weather.
That convinced me to install an auxiliary oil cooler. I've been happy with that decision. mcneely
>
> Dennis
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Dave Mcneely
> Sent: Thursday, March 14, 2013 5:51 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: '87 Westy - Oil Change, out of hibernation
>
> OlRivrRat, thanks for the information. I do switch to the 40W for the hottest three months, and those are the months when I push the camper the hardest, also. I am following VW Vanagon owner's book recommendation. Forty weight for temperatures running at the high end of the nineties, 20W50 for lower than that. 20W50 does great in winter around here, and in spring and fall, also does well in northern states in summer. It is just too damned hot here and in the SW and interior areas of the west.
>
> What do folks in Arizona do for running in summer? mcneely
>
> ---- OlRivrRat <OlRivrRat@COMCAST.NET> wrote:
> > Ooops ~ sorry about that McNeely ~ your email asking about
> > HighOP is immediately below Don Hansons email in which he says
> >
> > "After hard use on a hot day, my idle OP sits at about 25psi with the
> > 15-40w oil. When I use 10-40 or 10-30, I see about 10psi lower at
> > speed
> > and a few psi lower at idle when hot."
> >
> > & that is what I was attempting to respond to but clicked on your
> > email by mistake & did not notice.
> >
> > I don't know the answer to your HighOP? ~ just off hand I'd say
> > your OP#s look quite acceptable overall ~ I would start getting
> > concerned if they dropped much below what you are getting now. Not
> > sure, though, why you choose to change to thinner oil (40w) for the
> > hot months (if those are the 3mo's you are referring to), if the
> > 20w-50 works OK for you in the Winter it should work just fine
> > YearRound. You really ought to consider giving a Synthetic a try (at
> > least for those hot 3mo's), I suspect you may be pleasantly surprised
> > by the results ~ Walmart has Valvoline or Mobil1(not recommending just
> > informing) 5qtBottles for around $25 & usually many other good brands
> > as well. Good Synthetics don't have to be expensive anymore.
> >
> >
> > ORR ~ DeanB
> >
> >
> >
> >
> > On 14 Mar , 2013, at 11:18 AM, <mcneely4@cox.net> <mcneely4@cox.net>
> > wrote:
> >
> > > Well, the question was, "What is too much oil pressure in a
> > > waterboxer?" So, I repeat the question: What is too much oil
> > > pressure in a waterboxer? Is it 65 psi, 70 psi?
> > >
> > > On startup, cold, 20W50 Castrol (I hate the company, but use the oil
> > > because I can't seem to find a better, and will not pay for
> > > synthetic for an engine that is supposed to run on non-synthetic
> > > oil), the OP on my 1991 Volkswagen Vanagon GL Campmobile with 2.1
> > > with 170K miles runs at 60-70 psi depending on how cold it is. At
> > > home I garage it, and ambient temperature is usually around 50 F in
> > > winter. But then I park it outside when away from the house. But
> > > it has never pegged the 0-80 psi gauge. The pressure usually drops
> > > to 40 psi quickly as the engine warms up and holds around there.
> > > Summer is another matter, it usually drops to around 30 psi but will
> > > go lower on on long runs under hot conditions. I switch to 40W for
> > > about 3 months.
> > >
> > > So far as low OP, I don't see a problem there, except at idle it may
> > > drop to 10 psi or a tad lower after long hot runs.
> > >
> > > How much OP is too high??
> > >
> > > mcneely
> > >
> > > ---- OlRivrRat <OlRivrRat@COMCAST.NET> wrote:
> > >> If I saw a 10PSI drop or even a 5PSI drop in HotOP from
> > >> 15w-40 to
> > >> 10w-40 or even 0w-40 I would Kiss that OilManufacture Goodby in a
> > >> HeartBeat.
> > >>
> > >>
> > >> ORR ~ DeanB
> > >>
> > >> On 14 Mar , 2013, at 8:52 AM, Don Hanson wrote:
> > >>
> > >>> So, what is "too much" oil pressure in a waterboxer? mcneely
> > >>>
> > >>>
> > >>> And, what is too much oil pressure in an inline VW motor? (ABA
> > >>> Jetta 2.0
> > >>> liter)
> > >>>
> > >>> Mine, using 15-40 starts up cold with (3000rpm) 75-80psi, then
> > >>> when up to normal oil temp (~200f) the pressure settles at around
> > >>> 60-65psi (again, given a 3000rpm engine speed) I've wondered
> > >>> about the seemingly pretty high cold oil and engine oil
> > >>> pressure...
> > >>>
> > >>> After hard use on a hot day, my idle OP sits at about 25psi with
> > >>> the
> > >>> 15-40w oil. When I use 10-40 or 10-30, I see about 10psi lower at
> > >>> speed
> > >>> and a few psi lower at idle when hot.
> > >
> > > --
> > > David McNeely
> >
>
> --
> David McNeely
--
David McNeely
| 
