Here is a pdf of the Hayden Oil Cooler Catalog which includes some of
the more efficient cross flow radiators.  It has 142 pages.

http://www.haydenauto.com/assets/2003%20ImperialCat.pdf

Joel

I did not see any counter cross flow heat exchangers in
that catalog. All I saw was the old tube and fin designs which
are not as efficient compared to most radiators.
Almost all heat exchanger are cross flow.

Hot fluid comes in one end of the serpentine pipe so
the delta T varies from side to side as well as top to
bottom. I will say they seem to be very reliable and should
accept high oil pressures.

Paul Lamar

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