1155e case

Hello everybody. New member here been lurking for a while. I really gently bought a ex military 1155e. It's showing 250 hours. I know the military is notorious for changing out hour meters but I believe it is close if not right. Anyhow I have been changing out all fluids. They are all clear but who knows what they are and how long they have been it. The trans and hydraulic fluid is red looks like Dexron.

I have a couple of questions. How much if any metal or aluminum is considered normal...

1155e case

1155e case