Additional Vehicle Information
The thread to the pictures is by highlighting Community in the above dark brown headder and then click on pictures and alblums.
The oil coolers on this car are as follows:
The engine oil cooler is comprised of a piece that bolts on to the block where the stock oil filter goes, but also has a thermostatic valve to route oil to the oil cooler and then into the filter - cast aluminum which says purolator on it. I've got two spares of this piece. There is then an oil cooler which bolts up where the original battery goes and has an upper angled bracket from Alpina (at least they were making them about 40 years ago).
The differential oil cooler can be found by looking in the following link:
http://www.bmwmobiletradition-online.com/bmw/partgrp.do?model=5331&mospid=47199&hg=33&fg=05
part #7 in the second frame and the whole of the third frame. The cooler drum now seems to be made of unobtanium!
The original owner also modified the instrument cluster to add an oil pressure gauge and a voltmeter! Really cool, and I've still got his schematics on how to do it! Added a picture of it to the photo set