Avocado sits somewhere between olive and canola in terms of linoleic acid content (one reference said 13%; another said 7–20%), and has one of the highest smoke points of all cooking oils at 271°C. It's also pretty flavour neutral. It's a fantastic choice for high-heat cooking.

Yeah, I tend to use avocado oil when it's available or refined high-heat olive oil when it's not. The heavy processing of high heat olive oil is concerning but it does mean low linoleic acid.

> Fixating on lineolic acid is kind of hard

There have been many instances, throughout history, where something that had massive adoption by our society has turned out to be bad. Lead being a relatively recent example. All the plastics (BPA, BPA free "safe" plastics, phthalates, etc) probably being the current/next.

canola is probably the best out of the bunch but it's still too high in omega6s.

PUFAs - as cooking oils - should be totally and utterly avoided. People should be using butter, ghee, beef tallow, coconut oil, avocado oil (which is a little higher in omega6s that i'd like but it's mostly a monosaturated fat), duck fat, emu oil.

Macademia nut oil is higher in monosaturated fats than olive oil and has a higher smoke point, but it's expensive. Tallow, butter and coconut is where it's at for high heat cookiing.

Most seed, nut, corn, and vegetable oils are trash. Cottonseed, soybean, corn, canola, grapeseed, peanut, etc..

As I understand it, canola is the same as rapeseed oil, or is a refined version of it. For what I think are obvious reasons, I stay away from refined oils.

However, where I live I can get locally produced cold pressed "extra virgin" rapeseed oil. How would you say that compares to canola oil regarding how healthy (or trashy) it is?

Imho it's too high in omega6s

And the omega3s it has is ALA, which your body has to convert to EPA or DHA to use, and the conversion is usually crap. Like 5-10% of ALA actually becomes something usable.

Rapeseed isbetter than canola due to the processing for canola raising the omega6 profile even higher.

But if it were up to me? I'd find another oil.