Why is that? Does it mix well with water?
I just remember an idea i had for cleaning WMO with glyc. Andy (glycerides) did a test and they did not seem to split.
Hence me thinking that mineral oil would be taken into the glyc, but the veg spit off, in the same way as most of the other crud ends up in the glyc.
Of course, there would be the consideration of an emulsion, promoted by the mineral oil, but, as above, people have done reactions with mineral contaminants before without issue.