While fitting my decat downpipes I noticed the plastic sump pan on the DCT was wet with oil.
I left the undertrays off the car incase I needed to make any exhaust adjustments, and I've had spots of oil on the drive where the DCT has been leaking.
Seems quite common on other BMW's with a DCT.
Anyone on here had the same?
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DCT oil leak
- Nick9one1
- Member
- Posts: 299
- Joined: Thu Dec 28, 2017 12:48 am
- Location: Newark, Nottinghamshire
DCT oil leak
Last edited by Nick9one1 on Mon Feb 26, 2018 10:47 am, edited 1 time in total.
Z4 35i Space Gray, Red Leather
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
- Nick9one1
- Member
- Posts: 299
- Joined: Thu Dec 28, 2017 12:48 am
- Location: Newark, Nottinghamshire
DCT oil leak
It looks like this is a pretty expensive repair.
There are two gaskets on the DCT that can leak. One on the bottom (oil pan) and one one the side.
The oil pan gasket cant be bought alone, it comes with the pan and is about £200. Oil is £100.
The side gasket requires the DCT to be lowered for access.
There are two gaskets on the DCT that can leak. One on the bottom (oil pan) and one one the side.
The oil pan gasket cant be bought alone, it comes with the pan and is about £200. Oil is £100.
The side gasket requires the DCT to be lowered for access.
Z4 35i Space Gray, Red Leather
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
-
- Senior Member
- Posts: 2812
- Joined: Sun Nov 20, 2016 2:49 am
DCT oil leak
Alloy housing, plastic sump plate. Different rates of expansion and contraction. Plastic distorts. Usually damp, even moist. (Ooh, missus!) Shouldn't drip, though.
Last edited by Busterboo on Mon Feb 26, 2018 3:44 pm, edited 1 time in total.
Vidi, vici, veni
- Nick9one1
- Member
- Posts: 299
- Joined: Thu Dec 28, 2017 12:48 am
- Location: Newark, Nottinghamshire
DCT oil leak
Z4 35i Space Gray, Red Leather
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
-
- Lifer
- Posts: 8202
- Joined: Tue Oct 26, 2010 2:52 pm
DCT oil leak
Yet something more to check on mine. I wonder if this might be the source of my shifting issues and coincidence it happened around the same time as the injectors...
- Nick9one1
- Member
- Posts: 299
- Joined: Thu Dec 28, 2017 12:48 am
- Location: Newark, Nottinghamshire
DCT oil leak
I feel your pain. I've only had the car 2 months and I've already replaced 6 injectors and the turbo wastegate valves.Nick9one1 wrote: ↑Mon Feb 26, 2018 9:45 am While fitting my decat downpipes I noticed the plastic sump pan on the DCT was wet with oil.
I left the undertrays off the car incase I needed to make any exhaust adjustments, and I've had spots of oil on the drive where the DCT has been leaking.
Seems quite common on other BMW's with a DCT.
Anyone on here had the same?
Z4 35i Space Gray, Red Leather
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
DCT oil leak
Me too at 53k. BMW warranty didn't cover as gaskets not included. Pity the gasket was part of a £200 bit of plastic!
- Nick9one1
- Member
- Posts: 299
- Joined: Thu Dec 28, 2017 12:48 am
- Location: Newark, Nottinghamshire
DCT oil leak
I discovered that it is possible to buy just the gasket. A company called vaico sells it.
https://rover.ebay.com/rover/0/0/0?mpre ... 1456506337
https://rover.ebay.com/rover/0/0/0?mpre ... 1456506337
Z4 35i Space Gray, Red Leather
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP
Stepped Intercooler
De-Cat Downpipes
HKS SSQV
MHD 98RON Stage 2+
395 BHP