1500 miles is the rated service life of the miniature oil filters, be they Honda, Kawasaki, Yamaha or Suzuki. Or Emgo, K&N, Hi-Power, Hi-Flow, etc aftermarket jobbies that are better made than the oem filters. I used to change the oil in the Savage once a year, and the filters seemed to hold up alright.
One of the local stealerships buys Emgo filters from me, and charges his customers for oem filters...mine are $3.95, he gets $14.95 a pop for them...
-WD