I have a 1991 BMW 735i and I am changing the transmission filter and fluid

Question

here is the problem autozone site says the fluid type is gl-4 but i also saw at another place its dexron 3 which is it

Answer 1

Dextron 3 and above is good.

Answer 2

BMW Service Manual says the 4HP 22/EH Automatic Trans. should be refilled with DEXRON III.  Change of  ATF should require 3 litres of ATF such that the dipstick shows a fluid level between the min and max markings when the ATF has been warmed up to operating temperature.

Auto Zone's ATF gl-4 may be equivilent to the DEXRON III.  Check with your BMW Dealer to see a list of approved alternative ATF choices.