The iron block engines have a "oil cooler bypass valve" that bypasses the oil cooler when the oil is cold. If the car does not have an oil cooler the port is plugged. So you would need the oil cooler bypass valve to make the oil circuit to the cooler. From what I have seen (at least in the iron block engines) only the sedans had an oil cooler, not 107's. Not sure what alloy block cars had oil coolers.

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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