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Re: Can I use 23 month old 50/50 coolant-distilled water mix?
Posted to Technical Theory Forum on 6/17/2021 6 Replies

I'd say yes, as it hasn't been exposed to various metals and moving parts yet.

I don't know why you're still using green 2 year stuff. I swiitched over to G-05 on my 94 Suburban after validating with coolant manufacturers. It gets expensive tossing almost 4 ... Login to read more.

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