There are a LOT of differing opinions about oil based lubes and the friendliness of these to the average vagina. There is some data that some women cannot shed oils from the vagina. Obviously some can, as they use organic cocoanut oil and other food oils with no problem.
Women with yeast infection problems or histories of bacterial vaginosis should probably NOT use oil based lubes as they can trap bacteria etc.
Here's like, 20 pages of past threads on this. There's a lot of opinions. link