Awaiting new Hyundai Theta II Engine Install

A 20 weight oil is what was said. Not 20 'Winter'.... The car you referenced still used an XW20 in a GDI engine, which I think is a fool's errand.
20W would be a 20 Winter grade (which does exist as a monograde). 20 grade or xW-20 would be the correct way to reference the use of a 20 grade while remaining ambiguous on whatever the Winter grade it carries is.
 
what break-in oil? just a steady diet of brick and mortar oil will do you. I had a 1998 F-150 with a re-built engine the mechanic recommended a 500 mile oil change then afterwards said resume as normal, what is Hyundai recommending? Just follow what Hyundai has listed for this engine is it a 5W-20 or 30? and I would personally use the Hyundai/Kia filters I ran those on my 2008 Sonata they're good, stout filters. most importantly I would try my best to accelerate easily and keep RPM's under 4,000 if you did have to accelerate for a highway merge do this for at least the first one - two oil changes. I stuck with a 4,000-5000 mile oil change back in 2008-2011 until I traded the car in and used a synthetic blend that was then now today the cost difference it doesn't pay not to use synthetic. SuperTech is great oil if that's your choice.
 
You are the W police here, huh? Good for you.

So, instead of focusing on the issues, you focus on the typing and terminology. LOL
EL-OH-EL indeed chuckles.

There's a whole post that I wrote on the subject, because it's so commonly misunderstood, that's stickied at the top of the forum:

Besides being needlessly combative and attempting to drag me, what have you contributed lately?
 
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