After you put the extra 3 quarts of
oil in, your problem will be solved. I would not have thought it either,But do the math.
Aviad
oil pan = 7 1/2 qt.
oil filter = 1 qt.
oil cooler = 1 1/2 qt.
all oil cooler & remote filter lines 1+ qt.
All of this combined with a high volume oil pump that is sucking your already low oil pan dry, is causing your issues.
This was brought to my attention by the good folks at Cobra Restorers, LTD.