Generally, German equipment manufacturers specify use of an anti seize compound.....again, generally Molybdenum Disulfide Paste (Moly Kote), to assure that uniform torque values are achieved. I have seen this mentioned in the MB service manuals....will note it when I am looking up something, next!!

I am sure that you did not specifically mean the bolt head.....the threads are what needs the anti seize.....

I, usually, run a re-thread tap into the bolt hole or nut and a hex die over the bolt threads.....this is to clean them of any debris.....a good wire brushing of the bolt threads will do.....and then running the nut onto the bolt with a bit of anti sieze to assure a clean, trouble free fit.....do this before any reassembly of parts.....

SB

Forgot to mention, blow out any blind bolt or stud holes with compressed air, and also wire brush the area where the nut, or bolt head seat against the part......and make sure that the proper bolt goes into the bolt hole, a longer bolt may possibly bottom out without exerting it's intended force on the part (also if there is trash in the bolt hole)....and a bolt that is too short for the intended use may eventually come loose, or distort and/or strip the threads.....

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Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG