What's a good substitute for Dextron II?

[6670charger]

Getting a light thunk in the trans (88 325i automatic) between 2nd and 1st gear when slowing down, usually around 20mph. I'm thinking that I may need to add a little trans fluid, however, the manual calls for Dextron II, and it isn't made anymore. What is everybody using as a substitute these days? Don't want to buy the wrong stuff and end up burning a trans.

 

Thanks.

[B C]

Dexron III and Dexron IV "meet or exceed" Dexron II specifications

Using dexron III or IV when dexron II is called for is perfectly acceptable. Id run Valvoline Max-Life ATF if I were you

[6670charger]

Great! Thanks!

[Boris3]

FWIW I'm running Redline D4 ATF in the 318is MT.