M5POST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   M5POST - BMW M5 Forum > F10 M5 Forum > BMW M5 (F10) General Forum

Post Reply
 
Thread Tools Search this Thread
      10-08-2019, 06:47 AM   #1
Raahil
Second Lieutenant
56
Rep
235
Posts

Drives: BMW 435d
Join Date: Aug 2016
Location: UK

iTrader: (0)

Milky oil cap

Hi Guys

My mate has a 2014 F10 M5 which he has just come to realise when doing a service that he has some milking which was present on his oil cap. pics below.
(ps. the lat time he checked his oil cap was maybe 6-7 months ago)

Now i know typical signs would be blown headgasket and loss of water coolant.
He did get loss of water but we believe that was due to leak on the top pipes as one of the rubber hoses was loose and it was evident coolant marks were all over the turbo heatshields.

Coolant has since been topped up (few days ago) and is awaiting to see if he gets loss of coolant again.
But in the meantime he is panicking he has a blown headgasket.

Would the M5's typically produce any milkiness in the oil? I have read plenty about water condensation causing this when the engine has not been warmed up to temp?

His typical driving is only a 5 mile commute to work and 5 mile back home so his engine does not really warm up properly.

Any guys who could shed some light on this would be much appreciated.

Thanks
Attached Images
  
Appreciate 0
      10-08-2019, 07:08 AM   #2
M5Rick
General
M5Rick's Avatar
58901
Rep
19,251
Posts

Drives: M5 F10 DCT Gunmetal
Join Date: Aug 2018
Location: Southern England

iTrader: (0)

Quote:
Originally Posted by Raahil View Post
Hi Guys

My mate has a 2014 F10 M5 which he has just come to realise when doing a service that he has some milking which was present on his oil cap. pics below.
(ps. the lat time he checked his oil cap was maybe 6-7 months ago)

Now i know typical signs would be blown headgasket and loss of water coolant.
He did get loss of water but we believe that was due to leak on the top pipes as one of the rubber hoses was loose and it was evident coolant marks were all over the turbo heatshields.

Coolant has since been topped up (few days ago) and is awaiting to see if he gets loss of coolant again.
But in the meantime he is panicking he has a blown headgasket.

Would the M5's typically produce any milkiness in the oil? I have read plenty about water condensation causing this when the engine has not been warmed up to temp?

His typical driving is only a 5 mile commute to work and 5 mile back home so his engine does not really warm up properly.

Any guys who could shed some light on this would be much appreciated.

Thanks
Tell your friend not to worry,it's normal for shorter journeys.
Appreciate 0
      10-08-2019, 07:13 AM   #3
technician117
Captain
United_States
251
Rep
606
Posts

Drives: 2000 M5, 2001 M5, 2013 M5 6MT
Join Date: Jul 2018
Location: Buffalo

iTrader: (1)

Garage List
1990 BMW M5  [0.00]
2000 BMW M5  [0.00]
2013 BMW M5  [0.00]
It's just condensation build up. Wipe it off when you see it but don't worry about it.
Appreciate 0
      10-08-2019, 07:29 AM   #4
SapphireM5
Major
SapphireM5's Avatar
710
Rep
1,107
Posts

Drives: 2013 M5 Sapphire Black
Join Date: Feb 2017
Location: New Jersey

iTrader: (3)

All cars get that, need to get the engine hot to burn off the condensation. The leaking turbo lines would drain his intercooler system not his engine coolant. Which did he top off?
__________________
'13 Black Sapphire Metallic - BPM Stage 1 Tune - RPI Exhaust - KW HAS Kit - 12mm spacers all around- Carbon Fiber front lip - High Kick Trunk Spoiler - Rear Roof Spoiler - IND Kidney and Fender Grills - 20% Tint all around 50% Front Windshield - PPF

Last edited by SapphireM5; 10-09-2019 at 02:37 PM..
Appreciate 0
      10-08-2019, 07:52 AM   #5
Raahil
Second Lieutenant
56
Rep
235
Posts

Drives: BMW 435d
Join Date: Aug 2016
Location: UK

iTrader: (0)

Quote:
Originally Posted by SapphireM5 View Post
All cars get that, need to get the engine hot to burn off the condensation. The leaking turbo lines would drain his inter cooker system not his engine coolant. Which did he top off?
Thanks for the replies guys.

He topped up the cooler on the passenger side (RHD car) circled in red in the pic below
Attached Images
 
Appreciate 0
      10-08-2019, 08:24 AM   #6
M5Rick
General
M5Rick's Avatar
58901
Rep
19,251
Posts

Drives: M5 F10 DCT Gunmetal
Join Date: Aug 2018
Location: Southern England

iTrader: (0)

Quote:
Originally Posted by Raahil View Post
Thanks for the replies guys.

He topped up the cooler on the passenger side (RHD car) circled in red in the pic below
Negative. The turbo coolant reservoir is the blue circled one.
Appreciate 0
      10-08-2019, 08:34 AM   #7
Raahil
Second Lieutenant
56
Rep
235
Posts

Drives: BMW 435d
Join Date: Aug 2016
Location: UK

iTrader: (0)

Quote:
Originally Posted by M5theonlyone View Post
Negative. The turbo coolant reservoir is the blue circled one.
The blue circled one was full. no top up required.
Does that mean his engine coolant is being eaten up by blown headgasket then?

There are no other signs of coolant leak
Appreciate 0
      10-08-2019, 08:42 AM   #8
M5Rick
General
M5Rick's Avatar
58901
Rep
19,251
Posts

Drives: M5 F10 DCT Gunmetal
Join Date: Aug 2018
Location: Southern England

iTrader: (0)

Quote:
Originally Posted by Raahil View Post
The blue circled one was full. no top up required.
Does that mean his engine coolant is being eaten up by blown headgasket then?

There are no other signs of coolant leak
That's fine then,as leaking turbo cooling line pipe(s) would only be a trickle staining the ss sheet below it.
I'm sure his gasket hasn't blown and these big 4.4 engines do need an ENGINE filler small top up from time to time, fill 50/50 BMW anti freeze mixed with distilled water only.
Appreciate 2
Ickdeep5706.00
Raahil55.50
      10-08-2019, 11:55 AM   #9
Dwaynos
Captain
Dwaynos's Avatar
United Kingdom
378
Rep
948
Posts

Drives: F10 M5 Monte Carlo Blue
Join Date: May 2018
Location: UK

iTrader: (0)

Everything looks fine to me. As has been mentioned the residue under the cap is purely condensation mixed into oil. The coolant bottle circled red is difficult to check the level on. Take the cap off and shine a torch down there, you should see the water somewhere in the neck.
Appreciate 0
      10-09-2019, 11:34 AM   #10
technician117
Captain
United_States
251
Rep
606
Posts

Drives: 2000 M5, 2001 M5, 2013 M5 6MT
Join Date: Jul 2018
Location: Buffalo

iTrader: (1)

Garage List
1990 BMW M5  [0.00]
2000 BMW M5  [0.00]
2013 BMW M5  [0.00]
Just to clarify the cooling circuits I went back to the training manual. The blue circled cap in the OP's photo is the lower temperature coolant circuit which runs the intercoolers and DME's. The red circled cap controls everything else... engine coolant AND turbo coolant. The confusion comes because the turbo coolant circuit is only opened during specific operating parameters and the obvious one being after engine shutdown. These circuits use the same expansion tank and pressurized cap (red circle).
Appreciate 1
Raahil55.50
      10-09-2019, 12:18 PM   #11
Dwaynos
Captain
Dwaynos's Avatar
United Kingdom
378
Rep
948
Posts

Drives: F10 M5 Monte Carlo Blue
Join Date: May 2018
Location: UK

iTrader: (0)

Quote:
Originally Posted by technician117 View Post
Just to clarify the cooling circuits I went back to the training manual. The blue circled cap in the OP's photo is the lower temperature coolant circuit which runs the intercoolers and DME's. The red circled cap controls everything else... engine coolant AND turbo coolant. The confusion comes because the turbo coolant circuit is only opened during specific operating parameters and the obvious one being after engine shutdown. These circuits use the same expansion tank and pressurized cap (red circle).
I've seen people getting confused over this many times aswell. People assume that when the turbo coolant lines leak, the smaller reservoir level would become low. This is incorrect because the main coolant reservoir actually supplies these with water.

Thanks for pointing this out, I never thought to mention it myself.
Appreciate 0
      10-09-2019, 01:34 PM   #12
M5Rick
General
M5Rick's Avatar
58901
Rep
19,251
Posts

Drives: M5 F10 DCT Gunmetal
Join Date: Aug 2018
Location: Southern England

iTrader: (0)

Quote:
Originally Posted by Dwaynos View Post
I've seen people getting confused over this many times aswell. People assume that when the turbo coolant lines leak, the smaller reservoir level would become low. This is incorrect because the main coolant reservoir actually supplies these with water.

Thanks for pointing this out, I never thought to mention it myself.
Then what's the point of having the blue ringed smaller expansion tank with the min and max levels.
Appreciate 0
      10-09-2019, 03:34 PM   #13
technician117
Captain
United_States
251
Rep
606
Posts

Drives: 2000 M5, 2001 M5, 2013 M5 6MT
Join Date: Jul 2018
Location: Buffalo

iTrader: (1)

Garage List
1990 BMW M5  [0.00]
2000 BMW M5  [0.00]
2013 BMW M5  [0.00]
Quote:
Originally Posted by M5theonlyone View Post
Then what's the point of having the blue ringed smaller expansion tank with the min and max levels.
No idea why they did it this way but that tank/cap and fill level sign are only for the charge air coolers and DME's.
Appreciate 1
M5Rick58900.50
      10-10-2019, 06:44 AM   #14
Raahil
Second Lieutenant
56
Rep
235
Posts

Drives: BMW 435d
Join Date: Aug 2016
Location: UK

iTrader: (0)

Quote:
Originally Posted by technician117 View Post
Just to clarify the cooling circuits I went back to the training manual. The blue circled cap in the OP's photo is the lower temperature coolant circuit which runs the intercoolers and DME's. The red circled cap controls everything else... engine coolant AND turbo coolant. The confusion comes because the turbo coolant circuit is only opened during specific operating parameters and the obvious one being after engine shutdown. These circuits use the same expansion tank and pressurized cap (red circle).
Thanks to everyone who has replied and thanks to technician117 for that very useful advice.
All comments passed onto my friend and he is most certainly relieved. Not usual for a M to be blowing a headgasket so soon with only 30k on the clock unless its been abused or run on low coolant.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off



All times are GMT -5. The time now is 06:14 PM.




m5post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST