Transmission fluid type

[Lisaredsgv]

I have 1976 Dodge F40 motorhome and I'm trying to find out what type of transmission
fluid to use in it

[IAMICHABOD]

There is a long running Thread dedicated to Dodge RVs You might ask there,they can answer many question that you may have for your RV.

Click Here for that Thread

[Grit_dog]

Type F. But in reality any atf will work in an old slush box. However I’d stay away from synthetic and newer fluids that are high in detergents.
But you don’t say whether it’s a rebuild, or drain n fill or flush or just adding because it’s low.
The answer could be different depending what you’re adding fluid for but type F will work for all.

[way2roll]

Is your RV a Class A or C? You posted in both forums.

[Nv_Guy]

I would say Dexron, as it most likely has a 727 Torqueflite trans. Back then you had two choices Type F (Ford) or Dexron. You could use Type F, but you wanted a complete drain and refill. Supposedly the Type F would give you firmer shifts.

[bobndot]

The vin number should identify the engine used, then you look up the matching transmission .
This link might help.

https://t137.com/registry/help/decode.php