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anti-seize compound for lug bolts? 850

Just finished rotating my 4 tires but once again forgot to pick-up
someof that anti-seize stuff for the threads. Is the stuff I need to
get "silver" in color? Is it the same stuff that you use on spark plug
threads?

Thanks & Happy New Year!








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    Never! Please...... 850

    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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    anti-seize compound for lug bolts? 850

    I use VersaChem number 13, which is a high temp antiseize compound that is intended for head bolts, egr valves, and exhaust bolts. I had a bad experience with lug nuts that had bonded themselves and I couldn't get of with a flat int he rain on the side of the road. Always clean the threads and apply a small amount. ALWAYS use a tourque wrench and a cross pattern when you install them. I also ALWAYS check the tourque again a hundred miles later and have never found any loose. IMHO technicaly the anti seize would act as a lubricant and affect the running tourque as you tighten the lug bolts, which would allow you to tighten the the bolts tighter. My guess would be it wouldn't be much, since I loosen them with a shrt cross bar, and haven't found any overly tight. Best Wishes, Chuck.








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    anti-seize compound for lug bolts? 850

    I always use antiseize on the threads, but just a little bit. And make sure not to get it on the mating surface--just the threads. Silver is fine... I usually use Permatex stuff. I also use it a lot on the part of the wheel that touches the hub, which can sometimes weld itself on when the tires/wheels are mounted for a long time in the winter months (where they salt the roads especially).

    I haven't ever seen a compelling reason not to use antiseize on wheel bolt/nut threads, but I have seen many of compelling reasons that you should. Also antiseize and an impact wrench can be a disaster because you can REALLY overtorque things.

    I should say, I've seen some wheels fly off where a well-intentioned person used WD-40 to free them and never cleaned them up again.

    But the wheel flying off factor is usually why most manufacturers say not to use anything on the threads... because the wheel could come off. And they can't take the chance of someone dunking the lug nuts or lug bolts in a bucket of antiseize and having them slip out on the road. So you really "shouldn't" put it on the threads (standard disclaimers apply), but on the other hand if you don't smear it on the mating surfaces, it is fine. And it's nice the next time you go to take them off.

    --
    Chris Herbst, in Wisconsin.








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      anti-seize compound for lug bolts? 850

      Chris:
      Can you explain further what you mean by "mating surface"?
      I would assume this would mean the "internal" insert thread in the wheel
      hub, but that doesn't make much sense. Do you mean the flat surface where
      the wheel interfaces with the hub?

      Thnaks & Have a happy new year!

      P.S. My wife is from the madison area of Wisconsin and we usually get
      out there once or twice a year. We are now in S.E. Pa.








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      anti-seize compound for lug bolts? 850

      If you want to put anti-seize on the mating surface, I see no reason why that would be a problem, so long as you made sure it never got on the threads of the lug bolts. However, a better solution would be to simply use a brass wheel on a cordless drill or even just a regular brass brush, and clean off the mating surface at every tire rotation.

      Why shouldn't you use anti-seize on the lug bolts? Because anti-seize changes the torque specification applied. The anti-seize acts as a lubricant and thus allows a much higher compression at the same torque values. What does this mean? You already understand that anti-seize can allow an impact wrench to apply greater linear force on a fastener. So why don't you apply this same understanding to torque applied by your hand? With a car with rotors SO sensitive to overtorquing, I can't understand why the thought wouldn't occur to you that this could be a problem.

      Your best bet is to keep everything clean. Use brake cleaners and brass brushes.







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