You can mix WMO and WVO but there is some kind of reaction that percipitates sludge out of the WMO and WVO so you have to have a way to collect it at the bottom of a tank. Since you have a centrifuge, you might have better luck with that. Even with all that done, I still would not mix the two and put it in my tank. If I switch from one to the other, I run 1/4 tank of D2 a few times to get the WMO or WVO out before switching.

You can mix Bio-D with WMO no problem as long as your fuel lines can handle the Bio-D.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge