New Bluetec Oil Leak SOLVED! Scanned forums never seen before...
#1
New Bluetec Oil Leak SOLVED! Scanned forums never seen before...
Hi All,
I figured I need to share my story.
Had a large drip occuring and soaking my entire passenger side undercarriage.
It was being flung by the passenger axle EVERYWHERE and almost impossible to trace back anywhere.
I pulled my oil cooler knowing that that has to be the fault. Nope, already had the purple seals FML!
So it kept going until I sprayed everything with degreaser and wiped it all off, and let it idle until I followed the leak.
It lead me to the oil pan bolts!! it wasnt the bolts for the pan though, it was the perpendicular bolt right above the oil pan. Theres either 4 or 5 on each size of the block large size external torx. IT WAS LOOSE!!! I mean barely finger tight!!
I snugged it back up lightly and will observe for leaks over the next few days. Will use loctite if it loosens again.
Anyone EVER have this issue?
I figured I need to share my story.
Had a large drip occuring and soaking my entire passenger side undercarriage.
It was being flung by the passenger axle EVERYWHERE and almost impossible to trace back anywhere.
I pulled my oil cooler knowing that that has to be the fault. Nope, already had the purple seals FML!
So it kept going until I sprayed everything with degreaser and wiped it all off, and let it idle until I followed the leak.
It lead me to the oil pan bolts!! it wasnt the bolts for the pan though, it was the perpendicular bolt right above the oil pan. Theres either 4 or 5 on each size of the block large size external torx. IT WAS LOOSE!!! I mean barely finger tight!!
I snugged it back up lightly and will observe for leaks over the next few days. Will use loctite if it loosens again.
Anyone EVER have this issue?
The following users liked this post:
albi.ad8 (08-20-2020)
#2
ML 250 2010 Diesel 98K miles..
Solved my messy leaks..
Fuel injector seals and o rings 3 on passenger side)
PVC Valve stuck open..
DEF injector sprayer failed at 95K miles
Oil cooler fixed under warranty
Killed the front differential mounts (3)
and motor mounts (2)
No change from $2,000. Thanks MB for using crappy parts..
Solved my messy leaks..
Fuel injector seals and o rings 3 on passenger side)
PVC Valve stuck open..
DEF injector sprayer failed at 95K miles
Oil cooler fixed under warranty
Killed the front differential mounts (3)
and motor mounts (2)
No change from $2,000. Thanks MB for using crappy parts..
#3
Folks,
let us collect the data on the Bluetec. I have search ~40 cars on cars.com and found 20 cars with leaks and torn seats (from CarFax report on the site). Please add your car or any you know to the list. There is no such record of engine failure for any other car in the industry. M-B should recall the bluetecs and offer full repair and warranty.
As a Material Scientist, I was stunned by the choice of material in that gasket. I never suspected anyone in Germany (one of the top countries in materials engineering) would do such a mistake rather than by Mercedes-Benz who has over 80 years of experience with diesel engines and have actually produced the best diesel engines in the world. Worse, the gasket is located deep in the engine that it would take a skilled technician between 25 to 35 hours to repair it, according to experts!M-B should have not used anything but metal gasket in that location.
Here is the list, please add yours and submit your case to the Attorney General
1
Year
Model
VIN
Mileage when leaked
Date reported
2
2011
E350
WDDHF2EB0BA296857
44,926
08/30/2013
3
2011
E350
WDDHF2EB0BA296857
65,926
01/16/2015
4
2011
E350
WDDHF2EB0BA395372
76,768
09/09/2015
5
2011
E350
WDDHF2EB1BA364020
58,635
11/28/2014
6
2011
E350
WDDHF2EB3BA358574
44,290
08/01/2013
7
2011
E350
WDDHF2EB4BA387193
38,602
06/03/2015
8
2011
E350
WDDHF2EB9BA311775
28,082
08/29/2013
9
2011
E350
WDDHF2EB9BA311775
49,800
01/29/2016
10
2011
E350
WDDHF2EB9BA496684
42,724
11/20/2014
11
2011
E350
WDDHF2EBXBA438888
36,988
04/11/2013
12
2012
E350
WDDHF2EB1CA592259
41,635
11/17/2014
13
2012
E350
WDDHF2EB3CA556069
41,505
04/16/2014
14
2012
E350
WDDHF2EB6CA524796
31,873
07/18/2014
15
2012
E350
WDDHF2EB7CA607833
40,457
12/10/2014
Lemon reported/reacquired
16
2012
E350
WDDHF2EB8CA521303
44,797
05/23/2014
17
2012
E350
WDDHF2EB8CA521303
52,176
04/16/2015
18
2012
E350
WDDHF2EB9CA595216
48,712
03/03/2015
19
2011
E350
WDDHF2EB7BA493038
34,385
12/03/2014
20
2011
E350
WDDHF2EB7BA470116
29,652
03/14/2014
let us collect the data on the Bluetec. I have search ~40 cars on cars.com and found 20 cars with leaks and torn seats (from CarFax report on the site). Please add your car or any you know to the list. There is no such record of engine failure for any other car in the industry. M-B should recall the bluetecs and offer full repair and warranty.
As a Material Scientist, I was stunned by the choice of material in that gasket. I never suspected anyone in Germany (one of the top countries in materials engineering) would do such a mistake rather than by Mercedes-Benz who has over 80 years of experience with diesel engines and have actually produced the best diesel engines in the world. Worse, the gasket is located deep in the engine that it would take a skilled technician between 25 to 35 hours to repair it, according to experts!M-B should have not used anything but metal gasket in that location.
Here is the list, please add yours and submit your case to the Attorney General
1
Year
Model
VIN
Mileage when leaked
Date reported
2
2011
E350
WDDHF2EB0BA296857
44,926
08/30/2013
3
2011
E350
WDDHF2EB0BA296857
65,926
01/16/2015
4
2011
E350
WDDHF2EB0BA395372
76,768
09/09/2015
5
2011
E350
WDDHF2EB1BA364020
58,635
11/28/2014
6
2011
E350
WDDHF2EB3BA358574
44,290
08/01/2013
7
2011
E350
WDDHF2EB4BA387193
38,602
06/03/2015
8
2011
E350
WDDHF2EB9BA311775
28,082
08/29/2013
9
2011
E350
WDDHF2EB9BA311775
49,800
01/29/2016
10
2011
E350
WDDHF2EB9BA496684
42,724
11/20/2014
11
2011
E350
WDDHF2EBXBA438888
36,988
04/11/2013
12
2012
E350
WDDHF2EB1CA592259
41,635
11/17/2014
13
2012
E350
WDDHF2EB3CA556069
41,505
04/16/2014
14
2012
E350
WDDHF2EB6CA524796
31,873
07/18/2014
15
2012
E350
WDDHF2EB7CA607833
40,457
12/10/2014
Lemon reported/reacquired
16
2012
E350
WDDHF2EB8CA521303
44,797
05/23/2014
17
2012
E350
WDDHF2EB8CA521303
52,176
04/16/2015
18
2012
E350
WDDHF2EB9CA595216
48,712
03/03/2015
19
2011
E350
WDDHF2EB7BA493038
34,385
12/03/2014
20
2011
E350
WDDHF2EB7BA470116
29,652
03/14/2014
#4
Senior Member
Joined: Jul 2011
Posts: 327
Likes: 54
2012 S350 Bluetec 4MATIC; 2011 ML350; 2005 C230k;
Hi All,
I figured I need to share my story.
Had a large drip occuring and soaking my entire passenger side undercarriage.
It was being flung by the passenger axle EVERYWHERE and almost impossible to trace back anywhere.
I pulled my oil cooler knowing that that has to be the fault. Nope, already had the purple seals FML!
So it kept going until I sprayed everything with degreaser and wiped it all off, and let it idle until I followed the leak.
It lead me to the oil pan bolts!! it wasnt the bolts for the pan though, it was the perpendicular bolt right above the oil pan. Theres either 4 or 5 on each size of the block large size external torx. IT WAS LOOSE!!! I mean barely finger tight!!
I snugged it back up lightly and will observe for leaks over the next few days. Will use loctite if it loosens again.
Anyone EVER have this issue?
I figured I need to share my story.
Had a large drip occuring and soaking my entire passenger side undercarriage.
It was being flung by the passenger axle EVERYWHERE and almost impossible to trace back anywhere.
I pulled my oil cooler knowing that that has to be the fault. Nope, already had the purple seals FML!
So it kept going until I sprayed everything with degreaser and wiped it all off, and let it idle until I followed the leak.
It lead me to the oil pan bolts!! it wasnt the bolts for the pan though, it was the perpendicular bolt right above the oil pan. Theres either 4 or 5 on each size of the block large size external torx. IT WAS LOOSE!!! I mean barely finger tight!!
I snugged it back up lightly and will observe for leaks over the next few days. Will use loctite if it loosens again.
Anyone EVER have this issue?
I think that I have same issue you had. I have oil leak on passenger side and I can't locate it, but from bottom looks like it is from the bolt.
#5
Those appear to be some really important Bolts!
https://nemigaparts.com/cat_spares/e...asis=16482263L
As shown at the link, the screws circled in the photo are crankshaft bearing cap holding bolts.
Forget the loctite idea.
These bolts are not reusable once installed and must be replaced. WIS states danger of breakage if reused ... and boy would you be screwed then.
The tightening spec is 53 nm, followed by turning a further 95 degrees.
It’s difficult to understand how these bolts would loosen unless the engine was overhauled subsequent to factory installation and the mechanic forgot them ... or reused them.
https://nemigaparts.com/cat_spares/e...asis=16482263L
As shown at the link, the screws circled in the photo are crankshaft bearing cap holding bolts.
Forget the loctite idea.
These bolts are not reusable once installed and must be replaced. WIS states danger of breakage if reused ... and boy would you be screwed then.
The tightening spec is 53 nm, followed by turning a further 95 degrees.
It’s difficult to understand how these bolts would loosen unless the engine was overhauled subsequent to factory installation and the mechanic forgot them ... or reused them.
Last edited by lkchris; 08-21-2020 at 08:20 PM.