I did a test a while ago with magnesol + WVO

400mls of lightly used rapeseed oil that titrated at 1.0 with KOH. Added 3 teaspoons full of magnesol, heated to 50degs, stirred several times, left to cool and settle. Re-titrated with a result of 0.3

A residue layer appeared in the beaker not too dissimilar to glycerol.