Join Date: Jan 2008
Location: Southern Nevada
Well best way would be to take it to a qualified place for a complete flush, it is just a lot easier using those machines that collect all used coolant ( you shouldn't just dump it somewhere ) and replace it with new, as for what kind to use , follow your owner's manual specs. chevy requires dex-cool antifreeze.
2007 Silverado K3500 Crew Cab LT, 6 speed Allison,
Single rear tires, Long Bed, K&N CAI , Aero Turbine Muffler 3535 ( cool but not that great ).