Where do you add transmission fluid on a 1965 ford galaxy 500 with 390?

The 1965 Ford Galaxie 500 with a 390 engine likely has a C6 automatic transmission. The transmission fluid dipstick and fill tube are usually located on the passenger side of the transmission. It's a fairly long dipstick, often with a bright colored handle (red or yellow are common). You'll need to look along the side of the transmission case; it should be readily visible, though it might be somewhat tucked away.

Important Considerations:

* Check your owner's manual: If you have the original owner's manual, it will definitively show you the location.

* Warm the transmission: Make sure the transmission fluid is warmed up to operating temperature before checking the level. A cold transmission will give an inaccurate reading. Drive the car for a few miles, then let it sit for a few minutes before checking.

* Type of fluid: Use the correct type of transmission fluid specified for your C6 transmission. The wrong fluid can damage the transmission. Consult your owner's manual or a reputable parts store for the correct specification.

* Overfilling is bad: Don't overfill the transmission. It can cause serious damage. Add fluid slowly and check the dipstick frequently.

If you can't locate the dipstick, you may need to consult a repair manual specific to your vehicle year and transmission. A mechanic can also easily identify the fill location.