| Too many "n"'s offering up advice. Search might prove to be your better friend. I personally use seafoam even in the engine crankcase. Just recently I was having a slight lifter tick for about a second at startup. I ran seafoam through the engine twice with 2 oil changes. I haven't heard the lifter tick since. Visit the seafoam website for more info and FAQ's Seafoam claims it is safe to even drive with it in your oil. They also say its safe for turbos.
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