True, I have seen it take 3 or 4 oil changes to get all the water out of the oil in automotive engines.On an oil change the 1500 holds about half quart of oil in rear cover that doesn't drain when you pull the drain plug, that may be the source of the continued milk in the oil. As to the lifters stuck, I've heard of this before, heard a fix was to turn the engine backward some with a wrench from the timing cover access and let it sit a while' then backwards some more.....
The hydraulic lifters probably don't like milky oil.....
As far as turning the engine backward, that was the genius over on GWD that thinks the oil pump will pump enough oil to keep the lifters pumped when turning forward by hand. It's never a good idea to turn and engine with belt driven cams backwards.