The motor oil cooler's job was to help quickly heat up the oil in cold weather ...
So far so good ...
... then maintain temperature in hot weather or high load conditions, such as high speed pursuits or towing across Death Valley.
Not as much.
For controlling motor oil in hot weather / high load conditions, Police Pursuit Vehicles use an external motor oil COOLER
that sheds heat to AIR instead of passing it off to the antifreeze.
Vehicles that do not work (or play) HARD don't need the external motor oil cooler,
the radiator's motor oil heat exchanger is enough - which is to say, KEEP IT.
@Nutro, IFF you're gonna delete the radiator's motor oil heat exchanger, which I can't recommend,
then upgrade to the PPV external motor oil cooler.