i have a m5od 4*2 it ****s perfect no noise and goes right into gear but in all gears while im driving theres a sound coming from the transmission its like a slight grinding scratching kind of noise. Its from a scrap yard and i have no clue how many miles are on it when i drained it there where some shavings on the magnet and some in the fluid that poured out that the magnet didnt catch but no real big chucks that i could see and it all looked silver. I was wondering if the m5od-R1 is just a noisy transmission or if i picked a bad apple
does it stop when you push in the clutch? if so, its your throwout bearing. mine was noisy till i got a new slave and it came with a new one. if not, it might be your pilot bearing and it may seen that its the tranny.