Ya, after further reading I agree, but that seems like a very expensive proposition! Probably why the Aroma360 oils are so expensive ($50-80 per bottle). I’ll try using pure essential oil and see if it works.

Thanks for the advice!

I read that for alcohol; to use equal parts of alcohol as in the essential/fragrance oil. I did it to match the viscosity of the brand’s oil. Not exactly equal parts but definitely more than a few drops and while the viscosity improved, the strength of the scent is still quite powerful.

Should I add more grain alcohol to it?

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I've been reading everything possible and experimenting. With these units they constantly tell you not to use a lot of oils as a carrier because if it is too thick it will clog up the unit. But obviously you can't just use straight essential oils or it would cost you a fortune. So after studying, I got some 95% grain alcohol, like a generic brand of everclear, big old bottle for $10. Do not use isopropyl alcohol, as it would work, it would blend the oil together if you got the high percentage kind, but the smell would be the problem. You would have the alcohol smell mixed with your fragrance when you turn your machine on. I mixed up some essential oils into the scent that I wanted, and then I added a couple of tablespoons of this grain alcohol. With it being this strong, it actually will bind with the essential oils, and just become one liquid. I let that sit and get mixed together well for a couple of hours. To add a little bit more to the mix so you could have a good amount of liquid to put in the unit, you really need to add something else. The grain alcohol has no smell, so adding just more of it would be okay for the smell, but even though it is a cold air unit, I just did not want to make the mixture that high of an alcohol content, so I added some witch hazel. It has a low alcohol content and then I believe it's some water in there. So that diluted the alcohol content. Let that sit for a bit, looked at it again and there was no oil line floating up top, the grain alcohol had done its job. So now I had a solution that had the smells, it had combined the oils into the liquid, and was now not a high alcohol content to be really dangerous. Obviously it was not too thick, and was not going to clog up the unit. I ran it through a couple of my machines, no problem. It was slightly weak smell wise, so the next batch I just added more of the essential oils to the same amount of the other ingredients, and it came out great. Going through the machine well, it does not cost a fortune to make the batch of it and not a high alcohol content. As we all know, is extremely difficult finding the answers about these units. If you Google them, it usually pulls up stuff about Reed diffusers or the water filled diffusers. It's hard to get the information about what's in the commercially made scented oils as well, so you just have to experiment. That's what I did and this seems to work well for me. I'm sure somebody will pipe in and say you're not supposed to put alcohol in it, but if you don't I would love to hear how they intend to have the essential oil mix with the other liquid you're going to add, which would probably be just water, but most of these machines even say don't add water. They also say don't add oil. So I say just do what works best for you.

What do you blend the essential oil with? Another base oil or alcohol?

That is my goal, for cost and for wanting some variety. Like Thieves or even just a winter blend. I love the oil I'm using but it is pricey. Where do you order your EOs in bulk from?

The one I love is from Scentfluence, they are out of Scarsdale, NY (I'm not crazy far, one day I might drive to the showroom) scentfluence.com
The fragrance I love is from the 1 Hotel in Miami collaboration. They made it for them. There are copies/dupes, a lot of people buy it from Aroma360 and the price is the same as scentfluence, but it says "inspired by" 1 Hotel. They aren't the real makers of the scent that 1 Hotel uses, but it is probably very close.
Aroma 360 calls it "My Way" Fine if it is cheaper, but it isn't.
To me, it smells clean and woodsy, not like men's shaving cream, but a tiny bit? The machine I have lets me choose how often it can puff it out which is great.
I spoke to Scentfluence about an order, she also recommended their scent Arlo, and At Ease. Never smelled them, but I have to winter type smells (winter pine and first frost) coming and also two rose scents.
I really did not like the one they did for the Manhattan Bacarat Hotel. If you want to try that, just try a sample, don't spend your money on the risk.