cant I just use quacker state oil 10 w 30 in my 2012 malibu?

Kwakker oil?

They specify thinner oil, but 10W-30 would likely work.

"Can" you?  

You can use whatever you want.  You can even use vegetable oil if you really feel like it.  But just because you 'can' use it doesn't mean it is the correct oil for the vehicle.  To find that out, check your owner's manual.

Sure if that's what you buy and it's the proper weight oil listed on the oil filler cap.

Make sure you change it every 3,000 miles!

Is your "quacker" state oil made from ducks?

Can you? Not knowing you personally, I can't say with any certainty what you capabilities are. Can you wipe your own ***? Can you dress yourself? Can you eat food with the aid of a utensil such as a fork or spoon? Can you open the hood of the car and locate the oil fill tube? If the answer to all of those is yes, then the chances of you using 10W30 oil in your car is a bit better than 50/50.

Although some of those vehicles come with 5w 30 it should be fine to put 10 w 30 into it

Walk away mate all cars are good

Quacker State, ay?

Quaker State, maybe, but I would stay away from the Quacks.

Your 2012 Malibu requires the use of 5W-30 engine oil, not 10W-30.

BYW, Quaker State engine oil is nothing special relative to other API certified quality oil brands such as Castrol or Valvoline.

1] READ YOUR OWNER'S MANUAL. If you don't have one, go to the Chevrolet website and download a PDF copy.

2] It's spelled QUAKER dipstick.

3] No. You should use SAE 5W-30 oil for most environments.