60k is when i do mine just for safty reasons. but i paid 500usd for jap auto to change the front crank seal cam seals and timing belt as well as the idlers. they dropped me off at home and they brought my car to me. now that's service. and they only use genuine parts. whenever i need something done that i don't want to do i drive down to florida and take it to them. yes they're that good.