i was talking to my friend the other day, and he drives a 89 240sx, and whenever he goes to the car wash he sprays his engien down with a hose. ive seen him do it and one day i say to him, isnt that bad for your engine, to spray it down with water right after you were driving it. (it was at operating temp) he said "no ive never heard of anything like that" so i got to thinking, that its bad to spray your engine down if thier is aluminum on it because aluminum cracks when it changes temperateure fast. well my main question is, do we not have cast iron blocks and are we able to spray our engines down right after it reaches operating temp? (3.4)
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