Through the fill plug hole located on the side of the transmission. Look for a square head, usually opened with 1/2 inch wrench. Best to use a plunger style pump attached to the fluid container. Place pump hose into hole and fill. Watch for... & stop pumping when fluid just starts to overflow out. Plug is a pipe fitting style thread, do not overtighten.
automatic or manual ?
on the transmission
That transmission uses 80-90w gear oil.
It should be lifted and level.
Type F Automatic Transmission Fluid.
through the transmission dipstick tube.
It takes just regular tranny fluid.
P.S. fluid or transmission fluid
80W Standard transmission lubricant R139-B. Actual part Ford part number C3RZ 19C547-B
1 quart
theres not really a type of fluid, theres just different names brands but its all the same transmission fluid, that i know of anyway.
The fluid used in the hydraulic system for the convertible top of a 1966 Ford Mustang is typically a hydraulic fluid, often referred to as "convertible top fluid" or "hydraulic top fluid." It's important to use a fluid that is compatible with the system, commonly either automatic transmission fluid (ATF) or a specific hydraulic fluid recommended by the manufacturer. Always check the owner's manual or service documentation for the precise specifications.