Actually over time it brakes down and becomes acidic, It also starts corrosion. But $9 every two years is cheap, the radiator for your Chevy is probably $100. I just paid $395 for a new one and I plan on making it last as long as possible.

Just my 2 cents.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200