oil change intervals on track bikes

[bikerguyzx12]

i know a majority of us here have track bikes, what i want to know is what intervals everyone changes there oil and filter at, i have a 600rr for the track, 05, and i use motul semi-synthetic oil in it, it has about 4000 miles on it in total and is used strictly at the track only, everyones input is greatly appreciated..................also, i am not a super-aggessive rider at the track, i am a casual track rider that does it for the fun and experience but i do bounce the revlimiter at times, hope this info helps