Do I need to reapply AS5?

trainer772

Honorable
Jun 12, 2013
17
0
10,510
This PC will be around for as long as 6-8 years. The CPU is a 3570k and the cooler is some huge Zalman cooler. For anyone who's had long term experience with AS5, will I ever need to reapply it if I don't replace the CPU or heatsink? And if I do, how often should I replace it in its 6-8 year lifespan?