After gettting a spark plug stuck in the head of my old Dodge Aries in Canada, I put anti-seize on any steel bolt screwed into aluminum. Saves much grief later, when the bolt head breaks off, etc.

Probably not really a necessity for the rocker arm bolts, since they are oil covered, but why risk it? Antiseize is cheap, and doesn't affect torque readings!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!