How often should you change spark plugs?

Related questions

1. Should you use anti seize on NGK Spark Plugs?
2. Does anti seize affect torque?
3. Are Iridium spark plugs better than platinum?
4. How many miles before I change my spark plugs?
5. Will a loose spark plug cause a misfire?
6. Which spark plug is better iridium or platinum?
7. How do you tighten NGK Spark Plugs?
8. Is NTK the same as NGK?
9. What is the advantage of Iridium spark plugs?
10. What spark plugs should I use?

Tags

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2. #other
3. #stock
4. #owner
5. #replace
6. #spark
7. #depending
8. #actual
9. #probably
10. #automaker
11. #factors
12. #timing
13. #using
14. #recommends
15. #check
16. #roughly
17. #every
18. #however
19. #miles
20. #replacement
21. #manual