Nismo_Freak wrote:You don't have to change the transmission and clutch fluid to do a clutch. However it's suggested that you do it when the transmission is out.
I agree, you don't necessarily have to change the clutch fluid since he isn't exposing the clutch hydraulic system to air. However, after the installation of a new clutch, it is also recommended that he bleed the clutch fluid. Furthermore, the removal of the drive axle will allow transmission fluid to drain out. So it's really up to him if he chooses to do a half-a$$ job, changing of the fluids is highly recommended. To put simply, it's only logical that he change the clutch and transmission fluids, assuming that he does choose to install a new clutch.
-kenny