I had about 5 gallons D2 in my tank. Simply put 10 gallons W85 into the tank and ran it. Seems to run fine... no weaning for me. Haven't tried it but I'm pretty sure you can run any of the WMO & ATF with each other and D2. The only thing that you don't want to do is run W85 with the WVO. I've heard that can cause bad things to happen.