VPI 16.5 v 17.0

I don't see why cleaning with Disc Doctor fluid is a problem, except that with DD fluid, you have to rinse with distilled water. I use DD brush and fluid, then put it on the 16.5, squirt distilled water on it and use the other DD brush which is pre-wetted with distilled water, and vacuum it all off with the 16.5 wand. The Disc Doctor also sells replacement pads for the 16.5 wand, which is cheaper than buying a new wand.

Peter, If you contact VPI directly, I'm sure they'd be very happy to answer your question and you'd get the most accurate response. I've read posts from people who use the VPI to vacuum the DD fluid, but I don't use it myself.
http://www.vpiindustries.com/contact.shtm

We recommend the Disc Doctor fluid - we find it does the best job and it is perfectly safe to use with the VPI machines.

I use a 2X Disk Doctor procedure by hand and use a Nitty Gritty for, ahem, sucking it off. The best - by far - procedure I've ever used.