I’d like that explained to me. I mean the problem of having an oil pressure sender on a tube.

I’m not being coy, I mean it. Purely mechanical oil pressure gauges are at the end of a tube, why not an electrical sender?

Alistair 

> On May 11, 2021, at 9:42 PM, OlRivrRat <OlRivrRat@comcast.net> wrote:
> 
>         IMHO, placing a Sender/Sensor, be it Pressure or Temp, @ the end of a Dead End Tube
> 
> is a Very Bad Idea > In the case of a Temp Sensor it could be next to impossible to get Fluid
> 
> to it that is Relevant & in the case of Pressure,, If You happen to end up with an Air Bubble
> 
> Trapped Between the Fluid & the Sensor You Most Probably May Not get Accurate Readings ~
> 
>                                                                ORR ~ DeanB
> 
>> On 10 May , 2021, at 9:43 PM, Gene P <olgreywoof@GMAIL.COM> wrote:
>> 
>> Hey folks,
>> 87 Wolfsburg 2.1, original everything
>> I don’t think this is a problem, I’m just wanting to learn something.
>> For years I’ve had VDO oil pressure and temp gauges, senders on a sandwich adaptor at the oil filter.  Start-up pressure has been just under 80, right at the top of the gauge, in any season.
>> 
>> As part of a recent project, I pulled the sender between the pushrod tubes and put that with the VDO sender on a tee about 7 inches forward of that port.  Now start-up pressure is about 55-57.  Would moving the sender in that manner cause a change, or that much change, in the reading?
>> 
>> The other change I made (burying the lead I think) is switching from Castrol 20W/50 to Mobil1 15/50 for the first time.  Does synthetic oil make that much difference in start-up pressure?