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Transmission fluid drip

Posted: Wed Apr 27, 2016 12:45 pm
by atledreier
Hi. I've had a very slow drip of fluid last few weeks. I thought it was just AC discharge, but it turns out it's transmission fluid. Maybe two-three drops per week when the car is driven, no drips when the car s parked. It's center of the car, just behind the front wheels. I don't have a lift so I can't get a good look, but what are common leak points in that area?

Re: Transmission fluid drip

Posted: Wed Apr 27, 2016 1:01 pm
by Nobby
The only real places for the oil to leak are from the unions and pipes that link to the cooler, the side and rear flanges (although these have their own diff oil in them - so it could be those leaking instead - rear is fairly common) or the sump plug/filler or out gasket. The main sections of the gearbox casing could also leak, but it'd be pretty rare for those to leak.

It'd be hard to tell if the front inner flange (where the torque converter joins to the engine) is leaking because oil could also leak out from the engine to that area too.

Check the hoses first and go from there. Has it ever had a gearbox oil change?

Re: Transmission fluid drip

Posted: Wed Apr 27, 2016 1:11 pm
by atledreier
It had a change 120.000km ago, it's due another one at the next service (242.500) now.

I'll check the hoses for the cooler, that sounds easier than a main shaft seal.

Re: Transmission fluid drip

Posted: Wed Apr 27, 2016 2:23 pm
by Shoppinit
Sounds more like the transfer box flange oil seal. Common fault.

Re: Transmission fluid drip

Posted: Wed Apr 27, 2016 4:25 pm
by atledreier
Hiw difficult is that to fix?

Re: Transmission fluid drip

Posted: Wed Apr 27, 2016 4:27 pm
by Shoppinit
Not too bad. Check the FAQ for a good DIY.

Re: Transmission fluid drip

Posted: Wed Apr 27, 2016 7:10 pm
by Jay_g
I did it the other day, did it on a ramp in about an hour, and was taking it easy. Didn't come across any problems either.

Re: Transmission fluid drip

Posted: Wed Apr 27, 2016 9:41 pm
by Nobby
^ Apart from when it starts leaking again in a weeks time :bigblink:

Re: Transmission fluid drip

Posted: Wed Apr 27, 2016 10:37 pm
by Jay_g
Nobby wrote:^ Apart from when it starts leaking again in a weeks time :bigblink:
Fingers crossed it doesn't , only pushed it in the 6mm or whatever the FAQ says

Re: Transmission fluid drip

Posted: Thu Apr 28, 2016 6:54 am
by atledreier
Sounds good. I'll have a look when I do the brakes and bearing that she also needs.... Ad the brake hose... And the DRC lines.... And the new battery... *sigh*

Re: Transmission fluid drip

Posted: Thu Apr 28, 2016 7:24 am
by Jay_g
I have a set of brand new genuine exhaust clamps if you need them ;)

But I guess your not in the UK, so doubt it will be economical..

Re: Transmission fluid drip

Posted: Thu Apr 28, 2016 8:11 am
by atledreier
Yeah, in Norway, so I'll source them locally if needed. She needs some love in many areas, sadly.

Re: Transmission fluid drip

Posted: Sun May 01, 2016 1:09 am
by audi_driver79
Back in 2012 I had a small leak from the gearbox which never reappeared after getting it serviced fingers crossed.

Re: Transmission fluid drip

Posted: Mon May 09, 2016 10:12 am
by atledreier
Had a look yesterday, and there's transmission fluid everywhere. Seems to be the flange seal, and the shaft is throwing the oil everywhere. Left side. Can anyone confirm it's 01L 409 399 that goes in there?

Re: Transmission fluid drip

Posted: Mon May 09, 2016 10:16 am
by Shoppinit
Which shaft? Drive shaft to front left wheel?