Quote:
Originally Posted by truckdude239
You should never run tap water.... there are chemicals in that will erode the inside of cooling system. Destilled water or coolant. Remenber coolant has a higher boiling point.... and a quite lower freezing point
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If your only ! I mean only trying to flush it out, then tap water should be fine, HOWEVER as TruckDude said, never use tap water for cooling your engine, especially one with aluminum heads.
The LSX engines hold air if emptied, so you should jack it up in the front when filling for final time AND fill the engine first with your coolant\distilled water mixture.