[Vwdiesel] '84 TD oil pressure

[gary]

If I remember correctly,
The Bentley says 28psi at 2000rpm.

There is a pressure sensor in the head and on the oil filter assy.

The head sensor is set for (I believe) 5 or 6 psi, and the filter sensor
is set for a higher pressure(20psi?, I don't exactly remember) 

>From idle to 2000rpm, the lower pressure sensor is in the loop, then at
2000rpm, the higher pressure unit takes over.

That said, 30w oil is too thin for an older IDI during the summer. The
engine itself is probably in decent shape. It's the intermediate shaft
bearings that are prone to early demise. Thicker oil and a bigger pump
will give you many more miles, but eventually the int-shaft bearings
will need to dealt with. 


-Gary
Former 1985 Quantum TD owner.

On Sun, 2005-06-26 at 00:05 -0400, Libbybapa at wmconnect.com wrote:
> My friend with the '84 Quantum TD changed his oil yesterday.  He bought Mobil 
> 1  10W-30.  Shortly after that his warning buzzer began going off.  We put on 
> a mechanical gauge today.  The warning buzzer was fairly obviously not 
> working correctly, as it would buzz even when the engine was off, and at cold start. 
>  The gauge would register 70 psi with buzzer still buzzing.  When the engine 
> was fully warmed up the buzzer and oil pressure light Stopped buzzing and 
> flashing.  At that point the hot idle oil pressure had dropped to 8 psi at the 
> head and would get up to 50-60 revved up fairly well.  I recommended that he 
> switch to the 15w-50.  I was wondering if anyone could confirm the gear size of 
> the oil pump for that year.  Also was wondering what was involved in removing 
> the pan from the engine in the quantum, as there is an additional crossmember to 
> contend with.  Any other thoughts?
> 
> Andrew
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