Join Date: Jan 2009
Location: St. Augustine Florida
Thanked 9 Times in 9 Posts
Rep Power: 7
I change mine every 300 hours or 3 years which ever comes first. since I usually put around 100 hours per year it works out pretty good. I used to change every year (100 hrs ) but decided that its just a waste of money, but if it gives you some peace of mind to change every year it may be worth it to you.