What type of antifreeze should i use in my 2006 G6?

For your 2006 Pontiac G6, it's recommended to use an antifreeze that meets the GM Dex-Cool specification, which is typically a 50/50 mixture of Dex-Cool antifreeze and distilled water. Dex-Cool is an orange-colored coolant designed for extended life and is suitable for most GM vehicles. Always check your owner’s manual for specific recommendations and ensure the coolant is compatible with your vehicle's cooling system.