This is probably over my head if I am asking this question but just give me the difference if I want to do a change. My uncle wants me to change his MTF fluid in a 1.6L Nissan Versa 4-speed. Amsoil recommends a GL-4 75w90 severe gear oil. The Clutch fluid is DOT 3 Brake fluid. Where is the clutch fluid drained from? Thank you in advance!