Extremely Sludgey Oil? - BMW M5 Forum and M6 Forums
E60 M5 and E61 M5 Touring Discussion 2005- Advertiser's Forum

 1Likes
Reply
 
LinkBack Thread Tools Rate Thread Display Modes
post #1 of 12 Old 12th February 2017, 05:40 AM Thread Starter
Derived
Member, Sport: Off DSC: On (>50 posts)
 
Join Date: Nov 2016
Location: Midwest
Posts: 77
Thanks: 3
Thanked 1 Time in 1 Post
Extremely Sludgey Oil?

So, this is the first oil change I've done on this car since I've bought it - put far fewer miles on it than I expected to by this point due to an extended stay at the dealership. So, last oil change was probably at least 5 months ago, probably ~4000 miles. Maybe close to 4500.

I've changed oil in lots of motorized things in my life, and I generally know what looks good and what looks bad. This looked pretty bad. It's about as dirty and sludge-like as oil can possibly be while still looking like oil, IMO. Even my friend who helped me out said in all his years of owning BMWs and other performance cars, this is the worst-looking oil he's seen. Pretty much looked like mud and chocolate syrup mixed together. No metallic particles or any other foreign matter though.

Carly confirmed that the car has now had 13 oil changes (including this one) over its ~79,500 miles, which seems fine. Previous owner made a point of doing it every 3500 miles or as close to that as possible, never used anything but the OEM oil change kit. So I'm wondering how it could have possibly looked so bad coming out. Given the delicacy of the rod bearings and VANOS, I'm a bit concerned.

Oil is getting sent to Blackstone, so will be interesting to see what they say. Is this normal? Is it supposed to look this dirty? This is the first time I've specifically done an oil change on an S85 car, but I've never seen oil look like this before...only thing that came close was a heavily abused Briggs & Stratton-powered Sears lawnmower after lots of abuse and neglect...

Thanks


Sent from my iPad using Tapatalk
Derived is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 12th February 2017, 05:50 AM
Craze
Addicted Member (>300 posts)
 
Join Date: Dec 2015
Posts: 360
Thanks: 3
Thanked 11 Times in 11 Posts
Dirty yes, slude like no. Was it wa when draining??

Fyi ive changed my oil after 4000km and it does looks black!

I think in 16000km since ive had mine its had over 5 changes

M5 E60 Silverstone, evolve tune, eventuri intake
Craze is offline  
post #3 of 12 Old 12th February 2017, 06:01 AM Thread Starter
Derived
Member, Sport: Off DSC: On (>50 posts)
 
Join Date: Nov 2016
Location: Midwest
Posts: 77
Thanks: 3
Thanked 1 Time in 1 Post
It seemed just a bit thick, can't say it actually had the consistency of sludge but it the coloring was quite bad, I thought. It had this "muddy" quality which I'm used to seeing when the oil has gotten seriously dirty. Seemed ok when draining but it was only traveling a small distance.


Sent from my iPad using Tapatalk
Derived is offline  
 
post #4 of 12 Old 12th February 2017, 10:49 AM
Hasan Shaikh
M5 Expert (>4000)
 
Hasan Shaikh's Avatar
 
Join Date: Aug 2009
Location: UAE
Age: 38
Posts: 6,512
Thanks: 2,825
Thanked 1,100 Times in 876 Posts
I change oil every 5k kms and it is always dark brownish in colour. Sort of like milk chocolate. Not dark chocolate.

Your description seems to suggest the oil had not been changed for a long time.
Hasan Shaikh is offline  
post #5 of 12 Old 12th February 2017, 02:32 PM
EuroObsess
Junior Member, warming up (<31 posts)
 
Join Date: Nov 2016
Posts: 18
Thanks: 1
Thanked 2 Times in 2 Posts
Do a bunch of short interval oil changes like literally 500miles change it 500 change it 500 change it and use shell Rotella t6 it has a lot of detergents since it's designed for diesels and many people use it with great reviews and would even go as far to say better or at least equally as good as oem.

But to your issue I highly recommend not using any additives and just do a bunch of short interval changes. The first change or 2 if your engines really bad you can even go ahead and do the oil change after a couple hundred miles. This will clean the motor up really good.

I do this to all my cars when I first get it before going on to doing a 3 to 4k routine chsnges and it makes a huge difference using the right oil with detergents will clean your internals safely and effectively. Also shell Rotella t6 is cheap and can be found at Walmart so it doesn't cost too much to do a bunch of changes.

Once you find the oil coming out clean after several short changes you can switch back to oem fluid if you prefer or a higher grade Ester based fluid such as motul. Which is what I usually run. After using the t6 to clean the motor. Or continue using the T6 if your on a budget it's a very good oil to be used routinely if your wanting to save a few bucks without sacrificing on quality.

Sent from my SM-G935T using Tapatalk

Last edited by EuroObsess; 12th February 2017 at 02:43 PM.
EuroObsess is offline  
post #6 of 12 Old 12th February 2017, 03:32 PM
gmak
Member, P500 Sport, MDM on (>800)
 
Join Date: Dec 2014
Location: Canada
Posts: 881
Thanks: 26
Thanked 69 Times in 69 Posts
Based on the words sludge, muddy, mud and chocolate syrup mixed together...

Isn't a chocolate milk like colour, along with sludge-ey consistency indicative of coolant in the oil? I'm sorry if this scares a bit - not my intention. It's just one of the signs to look for a head gasket issue in the E39s. Maybe a quick video of some of the oil being poured from one container to another might help with understanding what is being described.

Last edited by gmak; 12th February 2017 at 03:32 PM.
gmak is offline  
post #7 of 12 Old 12th February 2017, 03:39 PM
rt7085
m5board.comoholic (>1000 posts)
 
rt7085's Avatar
 
Join Date: Nov 2013
Location: West Newton,MA
Posts: 1,606
Thanks: 25
Thanked 152 Times in 140 Posts
Sounds like non recommended oil was being used. Either the owner was "told" that they used recommended oil and yet something else was poured in. Or he is not telling you the truth. Lets see what Blackstone says. The worst is when they said they changed oil but they didn't. That leads to thick sludgy oil.

The components found in the oil will be the fingerprint that will tell you what is up. Unless you have a coolant leak internal to the engine. That makes for really nasty oil, but it almost looks foamy white.

Last edited by rt7085; 12th February 2017 at 03:57 PM.
rt7085 is offline  
post #8 of 12 Old 12th February 2017, 05:21 PM Thread Starter
Derived
Member, Sport: Off DSC: On (>50 posts)
 
Join Date: Nov 2016
Location: Midwest
Posts: 77
Thanks: 3
Thanked 1 Time in 1 Post
Thanks for all the replies. Truly appreciate it. Unfortunately it was done late at night in a driveway, I totally forgot to take pics/video until it was too late. I am struggling to describe the color properly. I'm used to oil coming out quite dark, but still looking like oil. Almost black. This was much lighter in color, almost like muddy clay. Maybe it was just the angle of the lights we were using, not sure. Just much lighter and less transparent than I'm used to. Might be over-reacting

Like someone said, it seemed exactly like what you would expect if hadn't been changed in something like 15k miles. But I doubt that was the case. Either way, will have to wait for Blackstone analysis, hopefully that provides some answers. At least there was nothing metallic in it.


Sent from my iPhone using Tapatalk
Derived is offline  
post #9 of 12 Old 12th February 2017, 08:04 PM
cold m3
Member, Sport: On DSC: Off
 
cold m3's Avatar
 
Join Date: Jun 2014
Location: SE Pa
Posts: 286
Thanks: 5
Thanked 14 Times in 14 Posts
Garage
Quote:
Originally Posted by Derived View Post
Carly confirmed that the car has now had 13 oil changes (including this one) over its ~79,500 miles, which seems fine.
Where in Carly are you getting this information?

Current: 6MT 2008 E60 M5 (IB)
Sold: E46 M3 (6 years of ownership)
Insta: Cold_M3
Photos of My ///M5
cold m3 is offline  
post #10 of 12 Old 13th February 2017, 05:17 AM
robertstrendell
Addicted Member (>300 posts)
 
robertstrendell's Avatar
 
Join Date: May 2013
Location: harrisburg pa
Posts: 315
Thanks: 12
Thanked 12 Times in 12 Posts
robertstrendell is online now  
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW M5 Forum and M6 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes Rate This Thread
Linear Mode Linear Mode
Rate This Thread:



Similar Threads
Thread Thread Starter Forum Replies Last Post
EXTREMELY lean running M5? OneDaySoon E34 M5 Discussion 38 25th April 2014 03:42 AM
Extremely Happy!! BiGGeE1787 E39 M5 and E52 Z8 Discussion 5 23rd December 2010 09:47 PM
Extremely low mileage kenanov E34 M5 Discussion 9 30th April 2007 11:23 PM
DSC can be extremely dangerous KBK E39 M5 and E52 Z8 Discussion 49 12th May 2006 02:02 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome