Isn't the low pressure switch .3 bar?  1 bar = 14.5 psi? 

Chris.

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Dnia Mar 1, 2014 o godz. 22:55 Dennis Haynes <d23haynes57@HOTMAIL.COM> napisał(a):

> I think some are missing the main point of the dual oil pressure warning
> system. The low pressure switch is activated at around 3 psi. On the
> Waterboxer the high pressure switch is ~12.6 psi. On the inline engines the
> high pressure switch is ~ 25 psi. Having only the low pressure really means
> that at speed it is no longer an oil pressure warning indicator but a
> replace engine indicator. Unfortunately the engine would let you know
> something was wrong by the strange noises, loss of power, the sudden smoke
> screen as a rod exited the case.
> 
> If your engine can't maintain 12.6 psi at 2,000 rpm you do have a problem.
> Now with the water boxer it is possible to get the oil so hot that the
> viscosity drops to the point that you will get the buzzer and there may be
> nothing wrong except for that high oil temp. However that is still not a
> healthy situation over the long term. If your driving style or needs are
> such that this is problem then a good fix is a well-designed oil cooling
> system. I am convinced that the oil cooler is the main reason I have had
> such good luck with the engine in Fun Bus.
> 
> Dennis
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> mark drillock
> Sent: Saturday, March 1, 2014 10:35 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Oil pressure warnings, WAS: Mann Oil Filter and lifters
> 
> I think the biggest improvement was making the oil warning led a blinking
> warning to better get the driver's attention. The second oil switch I agree
> is of debatable value except it allowed for a loud warning buzzer to be
> added to really get the driver's attention while driving. I might be happier
> with just a 1 switch setup if it was combined with a buzzer that triggered
> whenever the warning light came on while the engine was running. An oil
> pressure gauge is not a viable substitute for a warning light but does its
> uses as an additional item though I know of many people who added one only
> to have IT be the source of trouble.
> 
> Mark
> 
> Stuart MacMillan wrote:
>> Interesting.  But what's that good for other than causing anxiety?
>> Without a gauge to monitor pressure under various conditions it's
>> completely useless IMHO.
>> 
>> Stuart
>> 
>> -----Original Message-----
>> From: mark drillock [mailto:mdrillock@cox.net]
>> Sent: Saturday, March 01, 2014 4:36 PM
>> To: Stuart MacMillan; vanagon@GERRY.VANAGON.COM
>> Subject: Re: Mann Oil Filter and lifters Was:Engine Starting Problem
>> 
>> This supposed correlation of the new dynamic oil warning system with
>> some weakness in the 2.1 ignores the fact that VW began fitting the
>> more complex dual oil switch system to all their vehicles in roughly
>> the same time frame. The major makeover to the electrical system
>> beginning in 86 Vanagons was merely a convenient point in time to also
>> add the same modernized oil warning system that many of their other
>> cars got the year before.
>> 
>> Mark
>> 
>> 
>> 
>> Stuart MacMillan wrote:
>>> .....
>>> If you want to really know what's going on with your engine and
>>> bearings, install an oil pressure guage.  Ignorance is not bliss with
>>> waterboxers, especially with the 2.1s!  VW knew this, and that's why
>>> they installed two pressure sensing systems.  .....
>> 
>>