Takes dextron 3
In a 1995 Oldsmobile Aurora, the transmission dipstick is located near the back of the engine, usually toward the driver's side. It is typically marked with a bright handle, often colored yellow or orange. To check the transmission fluid, make sure the engine is running and the vehicle is in park, then carefully pull out the dipstick, wipe it clean, reinsert it, and check the fluid level.
You put it down the tube that holds the trans dipstick.
Probably every 50K should be sufficient
You add fluid at the same place you check it.
And what is an Oldsmobile Sleep? Never heard of that model.
I suspect that the transmission cooler that is built into your radiator has leaked fluid internally into the coolant part of the rad and into the rest of the cooling system.
A 1992 Oldsmobile may not shift out of park because the transmission is stuck. Check to transmission fluid to ensure it is at the proper level.
trans fluid goes right in tube used to check fluid level
Possibly low of transmission fluid. Check the fluid level per the instructions in your owners manual. If the fluid level is OK, have the fluid and filter changed.
Check to see how much fluid is in your transmission.
To check the transmission fluid on a 2001 Oldsmobile Alero, start the engine and let it warm up to operating temperature. With the transmission in "Park," locate the transmission dipstick, usually found near the back of the engine. Remove the dipstick, wipe it clean, reinsert it, and then pull it out again to check the fluid level. The fluid should be between the "Full" and "Add" marks; if it's low, add the appropriate type of transmission fluid as specified in the owner's manual.