Quote:
Originally Posted by FrX
For aluminum heads, I always use anti-seize. Also make sure to torque to the proper values with a torque wrench. Most people end up over-tightening the spark plugs, which can be a bad thing on aluminum heads.
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FYI- If you are using anti-seize the torque measurement will be wrong because the threads are essentially lubricated. Less friction, less torque. The bolt will be over-tightened but ''read'' that it is properly torqued. Most spark plugs tell you to hand tighten, then tighten either 1/8th or 1/16 turn tighter.