An automotive driveline unit housing can be that of a power transfer unit (PTU), a final drive unit (FDU), or a rear drive unit (RDU). The automotive driveline unit housing has a lubricant feed passage spanning from an inlet to an outlet. The outlet can be situated near a seal of the automotive driveline unit, near a bearing of the unit, near both the seal and bearing, or near another component. The lubricant feed passage can have a flow restrictor located near its outlet. When the unit is in a connected state, lubricant is received in the lubricant feed passage via a spinning gear of the unit. The received lubricant trickles through the flow restrictor. And when the unit is in a disconnected state, lubricant continues to trickle through the flow restrictor, even though lubricant may no longer be received in the lubricant feed passage via the gear.