Yeah so I have what are seemingly unrelated problems but who knows. It is a 1984 D50 turbo diesel. I have a squeak coming from somewhere behind the cab. It seems to do it only when in gear and can only be heard at slower speeds. Also it seems like it gets worse when there is weight in the bed. I jacked up the rear and put it in gear but there was no sound, so it does seem weight related to me. The other problem is the clutch. sometimes fine and other times really hard to get into gear. The fluid resivour emptied once, so I bleed the system and refilled. The fluid has not gone down yet on about 1,000 miles. Could it be the throw out bearing causing all of this? Any help is appreciated. Thanks