Last time I flushed I used extended life anti-freeze, that was 3 years ago. Interested to see comment from others.
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1969 Firebird 350 convertible, t-5, Carousel Red
2008 Solstice GXP 5speed manual, Sly
2008 Grand Prix, Ink Slate, Winter daily driver
2009 G8, Switchblade Silver, summer daily driver
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