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I've been a tech for 25+ yrs and I never use the stuff for either spark plugs in aluminum head engines or lug nuts as there's no need for it and it's very messy stuff. If you work on it yourself and think it helps, fine BUT if you pay others to work on it, they'll be unhappy with it getting on everything everytime they need to remove wheels.
If you rotate the wheels as advised the lug nuts never rust in place.
As for spark plugs, the ONLY engines I'll consider using that stuff is with a very old iron head domestic V8 where they can get fairly rusty after a few years (30K intervals which might be many years for some if not used often). I've never seen a spark plug sieze in an aluminum head and I've worked on and owned those types of engines since '80.
I do use anti-sieze for some things but not those on newer Volvos (newer as in not vintage).
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