2021 T@B 400 - blowout-only winterizing for water pump

As mentioned in other threads, you may want to run a little antifreeze through the pump and into the toilet to preserve a plastic fitting in the toilet that seems to crack if not entirely free of water.  I think you can do this without running antifreeze into the other sink lines (at least that's what I'll believe until I un-winterize and see if I've avoided getting antifreeze that lingers in my main sink line).