I avoid Canola Oil, after googling it up - it's one of those things that has it's lovers and haters - depending on whether you believe one side or the other. But after seeing what <doesn't> happen to Canola-based peanut butter (it hasn't changed state, decomoposed or attracted bugs or any other vermin when left out for one year!) - I choose to avoid it.
So, I use olive oil or corn oil.
I'm starting to go more 'natural' on many foods. Started late in this, but getting better. Feeling better too.
I use peanut oil. It has a smoke point of 450 degrees. While canola and others have a smoke point of 400 it will burn very quickly and even if you don't see it burn you will taste it. Peanut oil is a neutral tasting oil so the true flavor of the food will come out without the aftertaste. I use mine throughout the camping season by filtering it with cheesecloth, unless I cooked fish or blooming onions.