What type anti freeze fluid do I need for my G-6 and how many quarts are needed on 2007 Pontiac G6

I want to change it myself.

Asked by for the 2007 Pontiac G6
The cooling system in your vehicle is filled with DEX-COOL engine coolant. This coolant is designed to remain in your vehicle for 5 years or 150,000 miles (240 000 km), whichever occurs first, if you add only DEX-COOL extended life coolant.

A 50/50 mixture of clean, drinkable water and DEX-COOL coolant will:

Note: We use distilled water to mix with the antifreez. Tap water can cause problems. Need to know engine size to give you capacity of your system.
2 answers
Owners manual under fluid specifications and/or capacities.As the other answer states use distilled water or 'pre-mixed' DEX-COOL.