From the threads I've read on this topic, the updated oil pan may not resolve some problems. The only "solution" that seems to be widely accepted is to fill a little past 5.5 quarts, to about 6; but that probably isn't the best solution. You can also install an Accusump oil accumulator from BAT, which may be the best way to go but also very pricey at $350.
Link -- Page 30.