Since it's not "real" leather...
 

What does everyone use to clean/treat the seats with? I bought a big bottle of armor all but wanted to hear from y'all before I applied it.

Put down the Armor All and walk away. Lol. Especially for the seats.

A nice gentle interior cleaner is fine on the faux leather. Look over on the Detailing forum and you'll find a lot of good info on care of the seats, although it's really not too tricky.

Zymol leather cleaner

I use it on my is350 and it works like a charm!

There were comments from other threads in this forum about using leather or vinyl cleaners, particularly about Armor All. Some, like LexBob2 say to stay away from it, while another person said Armor All is fine and not harmful or bad. Personally, I'd use a better brand like Meguires, Mothers or even Zymol made specially for leather or vinyl.