oh yes...
to answer the question.
lubing the bolts makes a big difference. Generally you get a better more accurate torquing with lubed threads. IF working on torque to yield bolts (which you almost ALWAYS lubricate not only the threads but the underside of the heads as well) failing to lube them can result in unwise mechanics who skip this step issuing swear words not long before other mechanics come over to investigate then laughing.
(Senior mechanics tip. If you snap or break something DONT SWEAR, It may make you feel good immediately but the humiliation that follows when your mates come over to make sure you're ok and leave laughing does nothing for self esteem)
