My Cousin transmission will not go in forward gears only reverse. When he pulled the pan the bottom of the pan was black. The oil looked like motor oil. What would cause the trans not to move in forward gears but will in reverse? The car was running fine. Going to a car show and it sounded like it slipped once. He parked it at the show and when it came time to go home the car wouldn't move forward. The transmission is a forward manual valve body.Any help would be appreciated.
Thanks,