Not sure about the WBX motor, but most motors are set up with a 'oil
bypass' valve that shunts the oil around the oil filter until operating temp
is reached.  Hence, those adapter sandwich plates for an oil cooler  add-on
are good things.  They take the oil for the cooler right before it goes into
the filter, but when the motor is cold, they get no flow because of that oil
bypass circuit in most motors.

  The one I had, from Mocal, the casting with the outlet to the aux. oil
cooler was too small and kinda sloppy.  I reamed it out with a die grinder
to match the #10 AN fittings and the size of my oil cooler galleries.  You
must have a good flow of air across the oil 'radiator' for it to be
effective.  If you encounter 'stop and go' high heat situations, a small fan
(Spal) can be mounted right on the cooler.

  I would certainly rig something up to help cool a Subaru install in a Van,
or if I hauled a big camper full in a Westie..Done right, it certainly
couldn't hurt..But it does need careful thought and planning and needs
proper fabrication...You'd hate to blow up a motor cause you neglected some
detail on a 'so-called'  Dependability Modification..

  Don Hanson

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