Does a suspension of alcohol and oil retain it’s mix ratio when throroughly mixed and sprayed? Experiment #1.
Just want to point out that this isn’t the most scientific experiment in the world, but take from it what you may find useful.
I took 1 empty to-go bottle and thoroughly washed it with hot water, including pumping a bottle’s worth through the spray. I then filled the bottle half way with 91% Isopropyl Alcohol, the “medical grade” stuff. I pumped that through the spray, then removed the spray nozzle and pumped any remaining liquid out of the tube. I let all the parts sit to completely dry.
Next, allowing about a quarter inch of “air space” in order to shake the contents, I divided the bottle by half. The first half I filled with the alcohol, adding 1 drop of red food coloring to distinguish it from the oil. After stirring it together completely with a wooden q-tip handle, I filled the second half with baby oil. I screwed on the lid tightly, added the cap, and shook vigorously for 15 seconds. Visual inspection revealed no immediate seperation and a thick, cloudy appearance so the suspension was pretty much as mixed as it was going to get. I sprayed approximately 1/4 of the to-go bottle into a clear shot glass, then covered the top of the glass with a spare Joker card I’ve held on to for obviously just such a purpose. 
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Ten minutes later, and I can clearly see there is approximately equal amounts of oil and alcohol.
The next step is to let the to-go bottle sit for a little while, then shake and test again. Stay tuned.
-D4