Date: Thu, 14 Mar 2013 20:27:16 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: '87 Westy - Oil Change, out of hibernation
In-Reply-To: <20130314171843.YV468.599389.imail@eastrmwml302>
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All sounds pretty normal to me.
I see wbxr engines do up to about 70psi cold at 2,000 rpm. 80 would
'highish' I supppose, but still not a problem.
That pressure, max pressure it can read, is regulated the pressure
relief valve.
If it didn't have that system, you could see 200 psi with 20W50 cold at
2,000 rpm .
I don't see that you have anything to worry about.
I have used a million gallons of Castrol GTW 20W50 over the years.
These days I seldom do.
I was convinced a little by a parts guy to use Valvoline Premium
Conventional 20W50.
Think he said it has some ZDDP still in it .
as for 'designedto run on non-sythetic' oil ....that's true in a way.
I would say the only engines that are designed to run on synthetic over
non-synthetic ...that's specified by the manufacturer .their goals are
low emissions/better fuel economy ..and long distances between oil changes.
Depending on how you use the car..
a modern Mercedesthat evaluates the conditonof the oil electronically ..
that system can allow as high as 15,000 miles between oil changes.
in any case..
'mostly' any engine can use synthetic over conventional..
I wouldn't put sythetic in a very high miles, low compression engine
that leaks a lot though ..
besides the cost factor I beleieve in things getting tiredover
time...and if you put in someting too exotic ..tha can push it over the
edge. 15 years ago synthetics might even be blammed for causing seals
to leak when they hadn't been leaking.
I never hearof that these days though.
If I have a nice tight engine that's pretty new .....I might run a
synthetic.
It still gets dirty at about the same rate as regular oil, and if money
is a concern...
it's tempting to not change it since it costs so much per qt.
Price for a 1t of synthetic oil probably runs between 8 and 15 dollars
per qt....depending on brand.
it is 'better' though ..
resists high temps better..
yeah...if driving in very high temps is much of a factor or concern..
and I had an engine that did not burn or leak oil.
I'd probably use a synthetic oil.
I like Royal Purple Synthetic ....they have a 20W50 too I think.
but your cold 2,000 rpm oil pressure sounds fine to me.
If there was no gauge ...you wouldn't have any idea anyway ...
that is likley why many cars do not have OP gauges from the factory
...they cause people to ask questions or have concern when they wouldn't
if there was no gauge there.
On 3/14/2013 10:18 AM, Dave Mcneely 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
>
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