TripleC321 Posted August 5, 2023 Share Posted August 5, 2023 I recently (4-5000 miles ago) did a drop pan and fluid change on my transmission. I refilled it with Dexron 7 fluid. I’ve seen posts going around I should have used a Dexron 3 non synthetic equivalent. Is Dexron 7 okay to use? Or do I need to drop the pan and change to a Dexron 3 ASAP? Link to comment Share on other sites More sharing options...
jon L Posted August 5, 2023 Share Posted August 5, 2023 Dropping the pan only get about 4 quarts out. You need to flush it all out. Link to comment Share on other sites More sharing options...
TripleC321 Posted August 5, 2023 Topic Author Share Posted August 5, 2023 Flushing is the exact opposite of what I’ve always been told to do. Cause it gets rid of the all old fluid that has microscopic clutch particles, which you need. I know the Dexron 7 works, it has been working for 4000 miles. I just didn’t know if it was “ideal” or “I’ve been lucky” Link to comment Share on other sites More sharing options...
jon L Posted August 7, 2023 Share Posted August 7, 2023 In that case, stop saying "I changed the fluid in my transmission". You only changed 4 quarts of it. Link to comment Share on other sites More sharing options...
Ronnie Posted August 7, 2023 Share Posted August 7, 2023 9 minutes ago, jon L said: In that case, stop saying "I changed the fluid in my transmission". You only changed 4 quarts of it. It's common for people to call that changing the fluid. Although technically you are correct, I would have said the same thing If I had dropped the pan and changed the filter. Link to comment Share on other sites More sharing options...
Ohjai Posted August 7, 2023 Share Posted August 7, 2023 So what is the verdict? Drop or Flush? I think most service stations use a machine to change the transmission fluid without dropping the pan. Link to comment Share on other sites More sharing options...
Ronnie Posted August 7, 2023 Share Posted August 7, 2023 I can't find any information about a Dextron 7 fluid so I can't comment about what should be done. Link to comment Share on other sites More sharing options...
DAVES89 Posted August 7, 2023 Share Posted August 7, 2023 I've always called it "filter, drain and fill"... Link to comment Share on other sites More sharing options...
jon L Posted August 8, 2023 Share Posted August 8, 2023 Sounds good to me. Link to comment Share on other sites More sharing options...
TripleC321 Posted August 8, 2023 Topic Author Share Posted August 8, 2023 19 hours ago, jon L said: In that case, stop saying "I changed the fluid in my transmission". You only changed 4 quarts of it. I say change, cause I did. I did this change when I replaced the engine and had the transmission out, so I also replaced the torque converter at the time. So I replaced the vast majority of the fluid. Link to comment Share on other sites More sharing options...
TripleC321 Posted August 8, 2023 Topic Author Share Posted August 8, 2023 18 hours ago, Ronnie said: I can't find any information about a Dextron 7 fluid so I can't comment about what should be done. Dexron 6 my apologies. I misremembered until I looked at my bottle of extra fluid. Link to comment Share on other sites More sharing options...
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