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The anti-corrosion additives (NaCAP,etc) in green maybe last 3 years IF you feel lucky (2 max, really) - orange can go 5+ easy. My Toyota is on it's 7th year with orange Dexcool and still in great shape....
I was just trying to point out that Dexcool isn't some crap that just kills cooling systems as some folks are saying - sure some cars have puked on it - but I don't see a lot of science as to the why - maybe, just maybe they would have puked green, too.
The worst is a mix, but that's a story of another mix....
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http://www.fidalgo.net/~brook4/oilslubesfilters.html
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