Attached is a more accurate drawing of the oil cooler inlet x-section; with a few pressure measurements.  Based on temps, the average flow velocity into the scoop is about 85 fps (57 mph) – all at about 160 mph airplane speed. (Point “A” is really about 4-5” ahead of the scoop.)

Ernest; since you were first to propose the internal airflow, or vane; what would you think is the appropriate shape, position, etc.  I can understand your non-participation on the ‘other’ list after being labeled “completely and totally wrong”. (That’s what you get for not reading his bookJ).

Others ideas obliviously of interest as well – ED?

Al