Hi rod0001,
Checking the coolant is standard for a maintenance service but is the cooling system leaking?
Yes water is better than mixing unknown coolants or anti freeze.
Blowing a gasket takes maybe 10 mins of excessive overheating and cracking a block is not easy unless you add water immediately when the engine stalls. It would be easier to crack the head.
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Tuesday, June 10th, 2008 AT 12:25 PM