I have a 2002 grand Prix and I put green coolant in
it by a mistake when I should have used Dex cool..I
filled the resovoir..
No big deal. The rumors of them turning to goo is false. If it were my car I would flush out the Dex cool and use regular coolant. https://www.quora.com/How-quickly-do-Green-Ethelyne-Glycol-and- Orange-Dex-Cool-Coolants-react
Ok so the green want show the aluminum heads..
No. If you read the bottle that the coolant came in it should say it is safe for aluminum.
Looking for a Used Grand Prix in your area?
CarGurus has 2,644 nationwide Grand Prix listings starting at $1,450.
Search Pontiac Grand Prix Questions
Pontiac Grand Prix Experts