mobile 1 oil... is it that bad?

IDZRVIT

Follow the recommendations in your Owner's Manual. It's far better advice than you'll get anywhere on the internet unless you have a specific use for your Z other than normal day to day driving and occasional spirited driving. 5W-30 covers a broad range of outdoor temperatures so don't get all hung up on what is the best oil for the Z - because there isn't any one best oil! It's personal preference and dino oil is perfectly fine for your Z. For now, use 5W-30 until you educate yourself on the types and usage for different weights of oil.

Btw, to answer your question - is Mobil 1 bad? You should rephrase the question and ask if anyone has lost an engine using Mobil 1 that was directly attributable to the oil breaking down during normal use. I have not heard of anyone and I will continue to use Mobil 1 in all my vehicles.

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"America.... still builds rockets!"
Vette: 355 cid, 400 rwhp
'13 CTS-V Coupe: 6.2L LSA, 556HP