Originally Posted by kluanie
... the cutter head manufacturers stress that the recommended torque be reduced by approx. 20% to keep from over torquing the bolts and stretching them.
I have often used a little anti-seize on wheel nut threads, but I am not advising anyone else to do this, due to the issue of getting correct torque. The issue is that the normal tightening torque, with less torque taken up by friction, results in more than intended tension in the bolt. This would be a particularly large concern for those allowing air-tool-wielding morons to work on their vehicles (air tools are fine... used properly). It seems to me that this concern applies whether the lubrication is on the threads or the seats.
I don't use oil on threads in general: if I'm going to add lubrication, at the risk of incorrect torque or tension, it might as well be something which prevents the connection from seizing. Having said that, specialized fasteners in specific applications (such as internally in an engine) may have specific procedures which should be followed. Of particular concern - and not relevant to wheel nuts - are steel bolts or studs threaded directly into aluminum components.
While I have no issue with following the dry-threads direction, even that will work as intended only if the threads are clean
. Anti-seize compound may be controversial, but rust and dirt are just entirely bad.