I've been noticing over the past several months that my car goes through a lot of oil between changes.

I most recently changd it 1.5 months ago and now there's ZERO oil in it. No warning lights or anything.

I read elsewhere that valve seals could be the problem.
Any thoughts or experiences to confirm?

Also I have 94.6K miles on it so the 100K warranty is fast approaching.
How is Hyundai on honoring their warranty for something like This? I've heard some stories that they're a pain in the butt.