Just want to give a thumbs up for olive oil. If you rinse with salt water after swishing with it, staining is a non-issue. One person claimed that it straightened his teeth! //www.curezone.org/forums/am.asp?i=1974887
Coconut and olive oil are my two faves for OP. Less frequently I'll use sunflower or sesame oil.
I add a bit of MSM powder and Vitol liquid COQ10. Oops, got to order more of the Vitol, I'm almost out! Thanks again for that tip, Larry!