I'm wondering if the body may recognize intuitively the best oil it needs at a particular moment. Needs at various times may be different. Perhaps we should listen to our bodies and see if an oil resonates better at certain times.
Experimenting with various oils is indeed valuable for these very reasons. I also think if you find an oil that resonates with you and provides results, your inner motivation will be stronger to maintain daily pulls with enthusiasm and positive energy. Otherwise the pulls may not be as frequent or as productive, if the subconscious is working against that oil.
Just thoughts to ponder. Thanks for your research on this Molly, sure do appreciate you! Blessings to all, Flower