2015 tdi golf oil leak

PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
Hey guys,

Doing oil change today and passenger side rear corner of the engine has oil all over the belly pan. Looks like upper oil pan rtv has a leak. There is the steel oil pan, then there is an upper oil pan extension rim that mount up to the block. Aluminum/steel block mating surface appears to be leaking. Wanted to see if any of you guys you had a similar issue in this area and found the leak/ oil build to being something other than the oil pan rtv.

It is a very slow leak. Enough to have made a mess in the underbelly pan, but not enough to have made it to the ground. More of a weep i suppose.

Definitely not the bottom oil pan foam seeping oil. I remove the foam each time I change oil since it likes to absorb the oil being drained.

Thanks in advance!
 
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740GLE

Top Post Dawg
Joined
Aug 19, 2009
Location
NH
TDI
2015 Passat SEL, 2017 Alltrack SE; BB 2010 Sedan Man; 2012 Passat,
you sure it's oil?

might be coolant leaking on the TB and you're seeing TB sludge. I'd pull the TB cover.

Have you ever had to add coolant?
 

PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
I have never added coolant, but that doesn’t mean it isn’t coolant. Tb cover is easy enough to access. Have to take a peek. Thanks for your reply.
 

PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
Well. Popped the TB cover. As clean as can be expected. Pretty sure I have to drop the upper pan and reseal. Weird that it’s leaking. Had a number of vws and the rtv has never given me a problem before.
 

PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
Okay. So to my everlasting regret I took her to the dealership……. They confirmed upper oil pan leak.

Question. Would an upper oil pan (leaking oil) be covered under the powertrain or long block warranty? Car has 40,000 miles on it and it was purchased as new as a stop sale 6/17.
 
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PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
Went to dealer to pickup car. Asked a few questions. Service writer conceded that this is covered under the powertrain ( and long block) warranty. Now they just have to do the work. Motor on!
 

PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
Question for you gentlemen. Does the dsg front cover have a tendency to wheep oil? Mine seems to be loosing just enough oil to produce evidence of a drip in the belly pan, and to have dust stuck on the trans. Is this typical? I don’t remember the my 2012 golf having any seepage at the dsg cover.
 

740GLE

Top Post Dawg
Joined
Aug 19, 2009
Location
NH
TDI
2015 Passat SEL, 2017 Alltrack SE; BB 2010 Sedan Man; 2012 Passat,
Don't believe its a known issue.
 

PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
That’s what I figured. I’ll replace the seal when I drop the dsg fluid in the spring. Thanks for the replies.

edit: any hints on the m unit front cover bolt torque value?
 

PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
Roughly speaking, not much.
More precisely:
Looks like the pump cover A is the side cover. Does the manual advise the front cover torque value. Says 8nm for pump cover A. Safe to assume the front cover would be the same as cover A?
 

Nuje

Top Post Dawg
Joined
Feb 11, 2005
Location
Island near Vancouver
TDI
2015 Sportwagen; Golf GLS 2002 (swap from 2L gas); 2016 A3 e-tron
That is the front pump cover (A) - #12 in the diagram below.
Mechatronic cover ("Transmission cover") is #5 below.


 

Nuje

Top Post Dawg
Joined
Feb 11, 2005
Location
Island near Vancouver
TDI
2015 Sportwagen; Golf GLS 2002 (swap from 2L gas); 2016 A3 e-tron
Nope - you got them mixed up. Front cover is "pump cover" - 8Nm from the first diagram I posted.
16Nm is for the "Transmission cover" (mechatronic cover).
 

PD Rig

Veteran Member
Joined
Oct 25, 2014
Location
Pennsylvania
TDI
2004, 2015 Golf TDI
got it. The transmission cover for the mechatronic unit is what has the wheeping action going on.

Thanks again.
 
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