Originally Posted by physics

I had a Porsche that had aluminum lug nuts on steel studs and so I used a little Permatex anti-seize compound on the threads of the studs after each removal of a wheel. It's good to clean off the old anti-seize compound before putting new stuff on. Being black anodized lugs, I always used a hand torque wrench when removing or tightening nuts. The anti-seize compound is also good for the steel threads on a spark plug when it's screwed into an aluminum cylinder head.