It seems like no matter what I do my transmission just wont stop leaking from the axle seal. I replaced the axle seal with a brand new oem one from Honda and it still leaked. I just went and bought a new axle today and an oem Honda snap ring for it, but yet it continues to leak. It's just a slow drip coming from the passenger side axle seal. I've watched it and seen it drip out so I know 100% that's where it's coming from, I just can't seem to figure out why. I'm really tired of filling my trans up once a month because of this. The transmission doesn't make any weird noises, has no grinds or issues other than this leak. I'm out of ideas as to why this axle seal continues to leak. Oh and yes the axle seal was put in properly and is flush with the trans casing. This has been a problem all year long and I'm just to the point now where I don't even wanna drive the car cause I'm always worried the trans is too low on fluid. Any ideas guys??? Thanks!

Trans is an s4 from the civic si

 

bump, cause I'm gettin the same issue with mine, replaced axle seal and still leaks.

 

Well its either your tearing the seal upon instillation or you can try a lil honda bond on the outside of a new trans seal and tap it in properly. Or its your axle itself coming out, usually aftermarket cheap axles like from auto zone usually always pop out. Try a reman. axle from the dealer.

 

That's a good idea actually. I might put some rtv around the seal and see if the leaking stops. The axle doesn't come out at all. It's a brand new axle and oem snap ring so i'm good on that. I drained it out earleir and left it halfa qt low just to see if it still leaks...and it does =[ I think i'm gonna try some rtv even though I hate doing stuff like that

 

Some photos of the seal so you can tell me if it's sitting where it should. It's dirty cause of all the fluid and grease on it but it's not torn or ripped.





I just put a bunch of rtv around it. I didn't want to, but I feel that is my only option at the moment

 

Who's transmission isn't leaking? My transmission isn't leaking =] I hate having rtv around that seal, but it seems to be working. There weren't any puddles on my garage floor, I just went and drove it and didn't see any drips on my trans either so it appears to be all good. I'm gonna let it sit as is over night and if I don't see any leaks by tomorrow then I'm calling it fixed. Then I'm finally gonna put my Motul fluid into it =] I'm happy now

 

And and wheres my thank you?? jk

 

Thank yoooouuuu =] lol

 

UGH!!!! Nevermind. It was good for a few days so I decided to finally put the Motul fluid into it and now it's leaking again. It has to be coming out from where the axle goes through because it's sealed with rtv where it touches the casing. I don't get why it's still leaking. I only put 2 qts in today so it shouldn't be over full

 

Dam, I just did the same thing with mine using rtv sealant around the gasket but I think mine is leaking from where the spline goes into the trans like your issue. If it leaks again I am going to swap another axle in. I figured it's cause I'm using auto zone crap reman axle but you are using OEM Honda so dam.

 

I'm using an oem honda seal, not an oem axle. I'm using an autozone axle, but I jsut changed it with a new one and it didn't help. It makes absolutely no sense why it's leaking. The seal is good, the axle is good, the fluid level is correct, and yet it still drips out. I DON'T GET IT!!!! =[

 

Do you have alot of play on the axle? are you able to move the cv joint going into the tranny up, down, side to side with alot of play?

 

If I grab the cv cup (the part that sits against the trans) I can pull it out ever so slightly and then push it back in again. I'm talking maybe 2mm at most. It doesn't have any play up or down though. When the axle was out I put my fingers into the trans to see if there was any play in the diff and it didn't move at all

 

Pulled the seal yesterday, packed the rear with grease (someone had told me to try that), put rtv around the outside of it, pushed it in, put rtv around where it touches the casing, and it's still leaking >=[ Out of curiosity when I went to autozone yesterday I asked them to look up the part # for both axle seals, one being for the 2000 si, and the other for the 1991 integra, they came back with different part numbers. Now my trans is from the 00 civic si, but the axle i'm using is from the 91 integra, the axle seal i'm using is for the 00 si, maybe I should try the seal from the 91 integra since that's the axle i'm using. Any thought on this?

 

See those 3 dents in that metal thing (2 big, 1 small)? Could that be causing my leak? and does that piece with the dents spin along with the diff?

 

it's not leaking anymore! =] I went to napa and got a seal for a 91 integra instead of getting a seal for the 00 civic si (si is the trans I'm using), since the axle is from the 91 teg. Turns out the inside diameter hole is slightly smaller on the seal for the 91, even though honda says they both use the same seal... I now know if I ever have to replace that seal again to get it from napa and not honda cause the oem one didn't work. I'm a happy camper now and It feels so nice to finally be able to drive my car and not worry about that leak. Now that I can drive it again I'll get to see if buying that Motul Moltygear fluid for it was worth it. Thanks for all the help guys I appreciate it