As a time saver, can I premix my oils in the heater and use them up over a period of a week or more? Can the oils be reheated each day or continuously left at 110 degrees without unacceptable degradation of the oils?
Yes, you can premix and heat your oils and use them over the course of several days or a week.
If you put a moving quilt or blanket over the heater, it will keep warm for a couple days – not at 110 degrees but where it is very easy to reheat.
There are several things you can do so you don’t have to wait so long for the oils to heat up, which also makes it very cost efficient.
You can put an insulation blanket around the heater similar to the kits they sell for water heaters.
A reflective space blanket from a sporting goods store does very well over the insulation.
You can also put the heater on a timer so that it kicks on before you start in the morning, say a half hour to an hour before. This, of course, saves waiting time.