>I am having a heck of a time finding the necessary pipe and pipe
>fittings to do the job. The threads in the crankcase are 10mm X 1.0 pitch,
>and not many folks make pipe fittings with metric threads. Can anybody
>suggest a good source?

Jake,

I find using a 10mm to 1/8 NPT adapter, allows me to use steel brake line
to a 1/8 sender. Much easier than messing with metric fittings.
<http://www.egauges.com/vdo_acce.asp?Subgroup=Metric_Adapter_Bushings&Cart=>
Here is a good example at egauges.com

Here's a shot of my Carat installation -

http://bworks.net/vw/oilpress1.htm

Angus
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Angus Gordon                       '89 Carat
NW Ohio                            '86 Syncro