Every 30,000 is recommended, and there are 2 "filters". The one in the tank never needs to be changed, its called a water sock. It keeps small amounts of water from getting into your fuel lines and its a rough filter. The only one that needs to be changed is the one just outside of the tank. It has an integral fuel pressure regulator so its not cheap.
2006 LS coupe, manual, Victory Red
Sportlines, FE5 struts, shocks, front swaybar, Progressive 22mm rear swaybar, Airlift load assist rear airbags, TWM ST shifter, smoothed TB, LSJ exhaust, debadged, demudflapped, Yokohama AVID Touring P195/60R15's. Soon to come 17x7 Motegi Tracklight 1.0. Best to date 15.402 at 90mph
"No friend ever served me, and no enemy ever wronged me, whom I have not repaid in full."
Lucius Cornelius Sulla