Metal shavings are never good inside any transmission.
If you have an automatic with overdrive then there is a good possibility that it is the 700R4 transmission.
You don't say what kind of particles or what liquid. For example, metal shavings in any automotive liquid isn't a good sign, this usually means a part is grinding together and the shavings are what is coming off. please be more specific
Usually it's the other way around. There's one license that covers manual AND automatic transmissions. And one that is only good for automatics.
A small amount of shavings is normal. That is why there is a magnet inside the pan to collect the shavings. A large amount or large pieces of metal is not normal and will require a professional to diagnosis. It it has run good and has not had shifting problems, or strange noises, then it is most likely fine. I just rebuilt my son's 4T60E transmission for that very problem. I found two sources of the metal shavings: The teeth on the reverse reaction drum (stove pipe) and the spyders for the differential in the final drive carrier were in the process of shelling out. Chuck Check to see if there is a recall on your transmission.
It usually means you're going to have to do some work to your engine. Most of the time, the metal shavings are pieces of one or more of your bearings. Never a good sign. Unfortunately it usually means that the bearings have "touched down" against the crankshaft and there's serious trouble.
For baby chicks only use pine or hardwood shavings, redwood shavings have a natural chemical in them that will make the chicks sick.
a good website to purchase online auto transmissions is automotix.com it has everything you can think of for transmissions and parts
there is one or two speed sensors on side of transmission to tell it when to shift. They are magnetic. When they get covered in metal shavings, they quit functioning. Pull them out, wipe off the metal shavings with a soft lint-free rag, and re-install them. This may fix your problem. It worked for me, when mine was stuck in first gear....... Good Luck :)
if an automatic transmission is grinding in reverse it is probably an internal failure. The car will probably need a good mechanic who specializes in transmissions to look at it to be sure. I have seen some cars with a simple linkage problem do this...but its unlikely.
Automatic or Manual ? Automatic- the least expensive method is to approach a local school with an Automotive program specializing in Automatic Transmissions , that is if time is not an issue - it may take several weeks or months - next cheapest method is a reputable Automatic Transmission rebuilder, have them install a rebuilt into your vehicle. I have had some junkyards (good ones ) do some good and reasonable work on automatics too. Ask around friends relatives etc Manual Trans - same basic answer - if time is not an issue try a good used transmission installed at a junk yard - Rebuilt manual transmissions can be very expensive depending on the vehicle (ie 4 wheel drive) Good luck
After cleaning, a light oiling is a good idea, especially where metal contacts metal. In an automatic, that would mostly be the slide/frame grooves.
Vehicles with manual transmissions almost always have more net horsepower at the rear wheels. More power is siphoned off through the torque converter in an automatic transmission than through the clutch and pressure plate in a manual transmission, thereby giving you greater rear-wheel horsepower from a manual transmission. That being said, automatic transmissions shift from gear to gear faster than you are able to shift gears in a manual transmission, unless you are really, really good at speed shifting. :)