I have a diagram and page that describes the oil circuit. I think the oil pressure is what determines if oil is routed to the cooler. I will post the diagram tomorrow. For what ever reason I don't think 107's got the oil cooler and the valve is plugged.

__________________
Tony H
W111 280SE 3.5 Coupe
Manual transmission

Past cars:
Porsche 914 2.0
'64 Jaguar XKE Roadster
'57 Oval Window VW
'71 Toyota Hilux Pickup Truck-Dad bought new
'73 Toyota Celica GT