3+ gallons in a year
coconut & extra virgin olive oil used most often
I also use soybean, castor, sunflower, sesame oils -- using more soybean lately because it can be purchased by the gallon at the supermarket.
I recently purchased half gallon of grapeseed oil
I usually infuse the oils with ayurvedic herbs e.g. single or mixed combinations of amla, hibiscus, fenugreek, henna, shikakai, brahmi, maka, etc.
I swim daily most of the year, fish in the surf and usually wash my hair at least twice per day (oil rinses, pre-poo with oil, co-wash overnight dc with oil). I also seal with oil on edges and ends.