They changed it to dot4 after it drained 1st time (took 8300 miles). System calls for dot 4 or dot 5.something. hope all is done the 690 duke uses same clutch and motor, isnt a common problem so i think im in the clear now. The clutch feels so good now i think the slave deteriorated so slowly i didnt notice how shitfy it started feeling. Of course i noticed the stalling ect but i feel like i have a new bike again!