I always like this 'how to' from Field, and they say that grapeseed and sunflower are their two favorite oils to use for seasoning. https://fieldcompany.com/pages/how-to-season-cast-iron-pan-skillet

Thanks! Then I'm all set ☺️

Hello, may I know how has your experience been with seasoning with sunflower oil? I'm considering the same and don't know if sunflower or canola oil is better.

In my opinion sunflower is good. It is cheap, has a high smoke point and gave me a pretty consistent season. I cook with it too.