All, the summer repair season continues. My ZF transmission began to WHINE immediately after a drain/fill and filter change, performed by me 2 years ago.
2 suspects are: Dextron 6 causes fluid to flow differently, causing transmission oil pump to whine. Or, filter / gasket kit I paid $14.96 for was not adequate, flows too little or too much (or installed incorrectly), again causing transmission oil pump to whine.
Incorrect level is also a possible culprit, but I think is not the case here.
Help me out here. I may try to put Dex III / Mercon back in. Also, what is a good, reputable ZF transmission filter? Some say that brand matters for this. Or tell me any other info about this. Thanks.