Some of the canola oil is better than cheap olive oil. There is issues with olive oil being diluted and extended because it is a scarce commodity. Canola oil, on the other hand is in search of more markets, especially the chemical extracted variety's.
Eatable canola oil from cold press is more reliable good than olive oil we buy at the supermarket. To test your oil, just keep it in the fridge. Mono will pour, pufa will not. Sorry, Other way around, eat the solids simple. Test before you yelp. Some is good, some less so, just like olive oil off the shelf. Consider Harvest Gold.
But using the fridge my be unreliable as Harvest Gold canola oil does not seperate, but becomes jelly like, viscous, at lower temperature.
and sharma on chioce http://www.drsharma.ca/is-obesity-the-worst-choice-a-person-can-make.html , he understand but does not belief in low carb as a partial solution.
Follow Jimmy, after the rules.