"Canola oil" is absolute shit. It is a barely modified version of what used to be called "rapeseed oil" (Beavis laugh), which used to be used as a lubricant for hydraulics and engines in World War II. Once the war ended, they had endless amounts of land dedicated to growing this shit, which was completely inedible. Eventually, they figured out a horrible process of filtering with hexane, an incredibly toxic substance, deodorizing it (in its original form it has utterly foul tastes that are still noticeable in the finished product), and otherwise processing it until it is at least presumably safe for consumption.
Then it is presented by the industry as if it is nearly a health food. It is not. It is at best just yet another oil. Maybe it's as good as corn oil. The main advantage it has is it's a ridiculously cheap industrial byproduct that can be used in huge quantities, which is why so much is sold.
Much as butter was slandered by an industry desperate to pawn off margarine on people, which is terrible crap, you'd probably be better off using lard than canola oil. But there I'm slipping off into opinion rather than fact.
Fact is, "canola oil," and its similar seed oil sibling cottonseed oil, are both from inedible plants, and are both foul-tasting substances in their original form, and are only popular because they have been heavily pimped after they discovered industrial processes to make them nominally edible.