The permatex super copper is the kind they mean (other manufacturese too but thats the stuff) stuff is bullet proof I have used it on exhaust manifole to head connections and the header on my BMW cracked right at the head and I plugged it with that to ride until I could fix it.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!