[DeTomaso] Mech vs electric oil pressure gauges

[wkooiman at earthlink.net]

I have mechanical Autometer oil and water temp gauges.  They are like the VDO gauges you describe.

Autometer offers 2 different lengths for the tubing (different PN's).

-----Original Message-----
>From: fresnofinches at aol.com
>Sent: Oct 7, 2007 9:47 AM
>To: detomaso at realbig.com
>Subject: [DeTomaso] Mech vs electric oil pressure gauges
>
>All,
>
>I recently searched out a matching oil temperature gauge to the existing VDO Cockpit (1st Series) 
>style gauges already in 2511.
>
>I learned that the VDO "mechanical" oil temp gauge does NOT have oil in the tube.? 
>What this gauge is actually doing is measuring the expansion of ether - not engine oil - 
>in a closed tubing system.? The tubing length is fixed at the factory and cannot be 
>shortened by the user.
>
>I did a web search just now on this, and found OEM water/oil temp gauges and OEM 
>water/oil pressure gauges BOTH work on the ether expansion principal. 
>
>So if the presence of hot oil or water in the cabin is of concern in your choice of gauges, 
>determine if your chosen gauge is using actual engine fluid or a closed-tubing ether system.
>
>Larry
>
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