3rdgearfun Posted November 11, 2021 Share Posted November 11, 2021 (edited) I swapped in a used 4eat auto transmission in my 1996 Subaru Legacy and I drove it 30 mins no problem then I got out of work then I checked the transmission fluid which was fine and the differential fluid which was also fine so I started to drive home and I had a white smoke screen behind my car so I pulled over and transmission fluid was everywhere and it looked to be coming out the breather valve so I check my transmission fluid which was obviously low and then I check my differential fluid in it was full to the top with ATF. What could be causing transmission fluid to get into the differential? Also what is the name of the part that would cause ATF to get in there? Edited November 11, 2021 by 3rdgearfun Link to comment Share on other sites More sharing options...
moosens Posted November 11, 2021 Share Posted November 11, 2021 Worn seal. Happens a lot on those 90’s automatics from my viewpoint. It will require the transmission be removed. 1 Link to comment Share on other sites More sharing options...
idosubaru Posted November 11, 2021 Share Posted November 11, 2021 Seal/oring between trans and diff. Sounds like you had an exceptionally rash failure. Link to comment Share on other sites More sharing options...
3rdgearfun Posted November 11, 2021 Author Share Posted November 11, 2021 Does anybody know what the seals name or part number is? Link to comment Share on other sites More sharing options...
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