Should You Apply Anti-Seize to Spark Plug Threads?

Learn why applying anti-seize to spark plug threads is important for maintenance and future removal.

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Yes, it's recommended to apply a small amount of anti-seize compound on spark plug threads, especially for aluminum cylinder heads. This prevents the plugs from seizing and makes future removal easier. Avoid over-application, as too much can affect torque readings.

FAQs & Answers

  1. What happens if you don't use anti-seize on spark plugs? Not using anti-seize can cause spark plugs to seize, making them difficult to remove during maintenance.
  2. How much anti-seize should I apply to spark plugs? Only a small amount is recommended; over-application can affect torque readings and lead to issues.
  3. Is anti-seize safe for aluminum cylinder heads? Yes, anti-seize is safe for aluminum cylinder heads when applied correctly.
  4. Can I use regular grease instead of anti-seize on spark plugs? No, regular grease is not recommended as it can break down under high heat; use a proper anti-seize compound.