Cannot wait to hear about what you call a "much better oil".
So after a bit of research it turns out you probably cannot buy either of these in your part of the world....
Explore the variety of Mobil™ engine oils suitable for Hyundai models such as the Hyundai i30 and Hyundai Tucson, including petrol and diesel engine oils.
www.mobil.com
???? Your assumption and assertion is incorrect once again.
We can buy anything we want it’s a big wide world. It includes Mobile 1 or Castrol Edge (which you use) at Walmart, Service Station quick stops or any number of franchised or non franchised parts outlets right off the shelves. They can be purchased online as well, from anywhere in the world. It’s called the internet, seriously!?
You really don’t know what your talking about do you? Historically, Castrol Edge and Mobile1, where both released in the US several decades ago. So instead of just accepting it‘s widely availability in the US, you make false comments attempting to argue your opinion. Frankly you’re making it up, grasping for straws as you go.

I’m not going to argue your opinion, especially one that is base-less and or fact-less.
Personally I refrain from buying any oil which based upon factual research is inferior to specialty oils, for example; Amsoil, Cerma etc. However, this is me and I don't cast doubt upon anyone else who doesn't.
Let’s jump back to your first comments regarding Mobile 1 and Castrol Edge motor oils.; You’re entire basis of commentary revolves around one main point; buying ”cheaper oil“ which indicates its approved by Mercedes Benz or Porsche. Additionally, based upon what you’ve previously used in other cars. This is of course, excluding the Hyundai i30N which you don’t own yet.
Do you understand Mercedes Benz and Porsche get paid by Mobile to advertise their product in their manufactures specifications?

Mobile is exactly where I’d go for an actual unbiased comparison of oils…………not! Don’t worry they won’t lie to you. It’s on the internet, so it has to be true, right?
Bottomline in this discussion; everything you’ve eluded to up till now is personally subjective. Try looking at the actually research provided by unbiased oil comparisons and oil laboratories, before trying to convince others what you use is the best thing since sliced bread.
Buy and use what oil you want, I’m not bothered. However, don’t talk down to others that have different opinions. First consider; some owners basis of selection and utilization, are made on factual unbiased research. Not only from in-depth comparisons but oil laboratory results. Just like with Blackstone Laboratories provides.

