Thanks! It's interesting that the oil cooling provides just secondary engine cooling.
I had noticed that water radiator hoses were much wider in comparison to oil cooler
hoses, and specific heat of oil is about half that of water, and yet oil coolers were
smaller than water coolers - all pointing to oil coolers not doing much under normal
conditions.
Regarding the cooler "taps", one of the YouTube videos about the cost of the first
dealer service of an INT650 showed that one fitting is bolted to the crankcase, and
the other could be seen to be a banjo hanging loose and dripping oil. My inquiry
here was to see if it might be worthwhile to substitute Aeroquip type fittings with
full diameter 90 deg turns instead of a banjo/bolt fitting with its (3) sharp 90 deg turns
which restrict flow rate. In the case of my elderly Fiat, the lower resistance of the
clutch slave cylinder actuation could be felt when I substitued Aeroquip fittings for
the OEM banjo/bolt because, unlike brake lines which primarily trasmit pressure,
the clutch line transmits fluid flow - like an oil cooler does. From what you say,
though, it wouldn't be worthwhile because the increased oil flow wouldn't provide
much additional engine cooling.
BikingTim