Posted for David Staten <Dastaten@earthlink.net>:

"""
 I think if you actually look at the oil system schematic, you will discover
that the oil return portion is not under "suction" whatsoever but still
positively pressurized. I'm not commenting on the diameters of the hoses. I'm
simply saying the rationale you give doesnt make sense to me.
"""
Perhaps "suction" was an improper term here.  I probably should have said the low pressure side.  There's a considerable pressure drop across the cooler. Sorry.

 <marv>