Recently fitted a disco tdi for a friend into a 110. Once it was in and running, it seemed to run very cool, so I checked the 'stat and lo and behold, there wasn't one.
Fitted one, and the temp sits at 85, but now the oil pressure drops off to nothing.
(both gauges are capillary)
Cold oil pressure is 40psi at tick over and 80psi at 2k rpm.
I'm thinking worn oil pump? Not doing its job with hot thin oil?
I assume a slipped cam bearing would affect oil pressure at all times, not just when hot.
Roland