Pre-lubed Hydraulic Lifters
I believe the conversation here is that if you pump the lifters up full by hand and then install them with the stock mopar hydraulic rocker shafts and rockers.
The lifters will be pumped up too far and hold the valves open, or heaven forbid make contact with the pistons.
They may bleed down on their own if given enough time.
The idea is to have the lifters to pump up to the middle of their travel, so that they remain self adjusting with room to compensate.