Transmission fluid

[Djillson]

Aquasport sport fisher 1986 twin mercruiser 350’s 260 hp. No serial on either. Need to know what kind of fluid goes in transmission.

 

[alldodge]

Would need to know which transmission, velvet drive, Hurth, borg warner
In most cases its Dexron 3 or above, but best to know what you have