I am not sure on oil... other than that my hair doesn't seem to like coconut oil. It doesn't make mine soft like people say, and it's hard to wash out. I was using an argan oil set for a while (shampoo, conditioner, and penetrating oil) and still use the oil from time to time in very small amounts, and it was great for a while but I think it started to build up. Though those products also have cones and polyquats I think (Organix brand). When I did my first PT and DT I tried a few different oils in small amounts and that was the time I really didn't get good results and it left my hair kind of producty and straight. The second time I think I ONLY used a little almond oil and that was when I skipped the DT and it was better.
My Hair:
2c
Fine, low porosity, med/high density
BSL - going for mid back to waist

HG: currently
just washing with a low poo that contains protein (Alba Naturals Coconut) and using Suave Naturals Coconut as both a RO and LI. No stylers right now, but this gives me pretty good curl, definition, low-ish frizz, and it feels and looks good. Also an occasional PT (liking the Palmer's Coconut Oil Formula which has cones) seems to be key for me.

Modified CG since February 2013