My 2 favorites are Caster Bean oil and Avocado oil. I like to put a taste of Peppermint into them as soon as I bring them home. Caster oil is very thick and sticky and barely flows & more like ooses. I like it on the tip of whatever. Avocado oil seems to be very accommodating and extra slippery, making it good for more vigorous activity. With these two you have something stable for like wearing and another for business. Another you might like is Coconut oil. This one can be easily formed into a large bolus and slipped in, or melted and taken with a 60 cc syringe. When I do this, I like to follow with water to cause it to rise up and go deeper. Since you have been playing with olive oil, try this one and see how different it might be. If you have a pressure cooker, try chicken oil. This way the oil does not over cook and remains more natural. Put your chicken parts in, herbs optional. Fill with filtered water to within 1.5 to 2 inches from the top. Cook for one hour, Cool and then chill. Next day when its temperature is in the lower 70's at least, the oil will be solidified on top and you can pick it out and put it away. You can do this with any fat meat, possum being the best, in my opinion, but squirrel or rabbit not so.
I have not done this, but Avocado seeds should render quite a bit of oil, as with Acorns, Chestnut, Almond, Walnut, etc... If you play with seeds for oil, please let me in on it, OK? But Avocado seed, being something that people throw away, really has a lot medicinal potential. Maybe we should research it, aye?