I really don't know. I have everclear, glycerine, coconut, avocado and olive oils laying around, and even some prop glycol but I think I want to be successful on my first batch so I'll probably go with butter. That is the namesake of the machine after all lol, but maybe olive oil since I use a lot of that as well.
My comment was more about the health benefits of not heating the oil too much. I would think that the oil extraction temperature recommended my the manufacturer for oil is optimum for most oils. EVOO, which has the lowest smoking point of 320°F, is still out of the range of the MBM's maximum so it can't smoke an oil to the point of being harmful to our health which is good.
But heating it to even 220°F could potentially reduce some of the health benefits of EVOO, so I wouldn't risk heating it to 250°F instead. The higher the temperature, the more potentially destructive the process could be for the health benefits of consuming EVOO in the first place, which are considerable.
Something like extra light olive oil has a much higher smoking temp than EVOO, but it has less health benefits as well because it's not first-pressing or cold-processed.
But if you are using regular salad or canola oil there's no real health benefits anyways and the smoking points are on the high side, so perhaps you could try it at both temps and get back to us? That would certainly be a valid datapoint.
I thought that Tweek's comment about rancidity was a good one, but if the end product is refrigerated it may not be that big of an issue. Still it is interesting that coconut oil, which has a low smoke point, has one of the longest shelf lives.
I agree that we need to look at shelf stability as well as smoking points etc., but sorry but I can't offer any real advice as I haven't received my MBM to use it yet!