Engine oil would be 10w-30. Brake fluid is Dot3. Power Steering and transmission take Dexron 3. The differential is 80-90w GL-5.
The 1967 Chevrolet Impala takes many different types of fluid. 10W-30 motor oil is recommended. A SAE Chevrolet transmission fluid can be used in the transmission.
either smash it or take it to a body shop.
Valvoline® - Automatic Transmission Fluid
take it to a car shop and tell them you need a new horn.
I would guess about six quarts...
Replacing a wiper motor on a 2004 Chevy Impala can be difficult. It is best to take it to an auto repair mechanic or an authorized Chevrolet dealership.
It just unbolts.
If there is no drain plug you have to remove the pan.
It will take dexron or mercon
It takes DOT-3 brake fluid.
Provided you have a lift and a transmission jack the time will be about 5 1/2 hours.
You need to take it to a repair and have then scan the system for codes and diagnosis it. It could be as simple as dirt on a sensor.