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Thx. for the info, i will flush it several times with water before I refill.

Anybody tell me the correct way to change the coolant in a 05 C6? Also what should I put back into car, Dex Cool or change to something else? Thx. :beer

Good info, thanks.

I would consider replacing the opti spark also unless you have already replaced it. :thumb

Looks good!

Tuna

Any news yet? I have a 2005 and this happened to me last week 40 miles from home. First, service active handling, service engine soon, abs warning, shocks inoperative, low fuel, then gauges...