I think both olive and coconut are too heavy to seal with but I may be wrong. I haven't tested them out yet and I only seal with a few drops of oil so maybe they'd work and I'm just being a chicken. However I've reevaluated my answer. I'm going to agree with Jas and Jessie and say I like coconut more because it's a little lighter and more practical for day to day use. The only time I put olive in my hair is when I DT. It does cowash out for me, but then I mix it with other things when I DT. I don't use it alone. Maybe if I was using it alone it'd stick around.
3A - C, HP, ME, HD. (Coarse, High Porosity, Medium Elasticity, High Density.)

CG since Nov. 2012

Poos: SM Moisture Retention + Yucca Baobab, TJ's Tea Tree Tingle
Condish: TJ 'sTea Tree Tingle*, SM Moisture Retention* + Curl & Shine + Yucca Baobab, Yes to Blueberries
Stylers: KCKT*, SM Curl Enhancing Smoothie* + Curl & Style Milk*, KCCC*, FSG*, CJ Pattern Pusha, Curl Keeper
Sealers: Jojoba* or Grapeseed* oil

* = HG