Very nice, Bush. Your answering your own posts at this point.
I believe the pump would be to take samples between changes, or to see how many more miles the oil could go if your running an extended change. As you mentioned at some point, if you have a Fumoto valve you can easily get a sample. A quick trip to a surgical supply store would get you the tubing and a small vacuum pump for about $12.00. If your running an after-market remote secondary filter and $130.00 worth of synthetic the $22.00 would be well worth it IMHO. If your running Rotella or Delo and a Fram or M/C from Wally World I would think you could just watch the odometer or calendar and figure it out.