A 50/50 mix of water and a good quality antifreeze
Transmission fluid, if you have a bad radiator.
Most vehicles have a coolant reservoir (a clear plastic tub) with a phrase "engine coolant only" printed on the cap. This is where you should add engine coolant.
Under the hood on the driver's side next to the washer fluid and engine coolant container.
Yes , when the engine is cold the coolant should be up to the cold fill mark
There should be a container you pour it into in the engine bay.
Sounds like engine coolant and what type of coolant depends on the vehicle.
No. Transmission fluid lubricates the transmission. Coolant is used by the radiator to cool the engine.
The sensor for the engine coolant on a 1991 Ford Probe LX is inside of the coolant tank. There is a lever, and when the fluid gets below this lever, it signals to be checked. It should be refilled.
This is most likely your coolant.
On the lower left side of the engine. It should have the words power steering clearly written on the container which is orange. The written name on container should be black.
Sometimes if you fill the coolant container (the white plastic container on the left side of the engine) with too much coolant , then run the car hard and park it, some coolant may be sent out the overflow tube due to the heated fluid. If no other symptom shows and the car seems normal then that is what is wrong. A lot of cars do this if the fluid level is filled right to the top. Recommendation, fill the coolant to about an inch or two of the top and not all the way to the top.
You should check your fluid levels, your oil and coolant.