I see where u found it saying it "recommends" a dry fill and "recommends" not to mix.. It says that with every other oil though also.. Probably just to cover their ass.. Because how could u have a "suitable" to use with that oil claim and then "need" to do a dry fill.
So I guess it's suitable, but to cover their ass they "recommend" a dry fill as obviously 1 consistent oil is better than any mixed oils.