THE LARGEST BMW 2-SERIES FORUM ON THE PLANET
2Addicts
2Addicts
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
2Addicts | BMW 2-Series forum BMW 2 Series (F22) Forum BMW 2 Series Coupe and Cabriolet (F22/F23) General Forum Strange Oily Residue in Engine Compartment

Post Reply
 
Thread Tools Search this Thread
      08-01-2020, 02:42 PM   #1
BetweenTheWheels
Private
BetweenTheWheels's Avatar
United_States
48
Rep
59
Posts

Drives: 228i M Sport
Join Date: Nov 2019
Location: Virginia USA

iTrader: (0)

Strange Oily Residue in Engine Compartment

Hi all

I have a couple of places under the hood of my 2015 228 that have an oily residue. It's odd because I can see the residue on both hood bumpstops and it has made a thin layer in the bracket into which the hood catch recedes. It's like the oil has collected around the front edge of the hood. There is no oil elsewhere on the engine and I don't have drips. Any suggestions ?
Attached Images
  
__________________
Current: 228i M Sport
Former: E85 Z4 3.0, E89 Z4 35is, 28 others....
Appreciate 0
      08-01-2020, 03:01 PM   #2
MarcoZandrini
Lieutenant
United_States
152
Rep
534
Posts

Drives: 2018 M240i
Join Date: Jun 2017
Location: Virginia

iTrader: (0)

It's cosmoline, the rust proofing that BMW sprays in the areas that are prone to rust.
Appreciate 2
      08-01-2020, 03:29 PM   #3
BetweenTheWheels
Private
BetweenTheWheels's Avatar
United_States
48
Rep
59
Posts

Drives: 228i M Sport
Join Date: Nov 2019
Location: Virginia USA

iTrader: (0)

Quote:
Originally Posted by MarcoZandrini View Post
It's cosmoline, the rust proofing that BMW sprays in the areas that are prone to rust.
Wow, even 6 years after it was built I'd see it in droplets like this?
__________________
Current: 228i M Sport
Former: E85 Z4 3.0, E89 Z4 35is, 28 others....
Appreciate 0
      08-01-2020, 03:38 PM   #4
Sportstick
Brigadier General
Sportstick's Avatar
United_States
2552
Rep
4,118
Posts

Drives: '15 228i and '18 330i GT
Join Date: Mar 2014
Location: Southwest USA

iTrader: (0)

Quote:
Originally Posted by BetweenTheWheels View Post
Wow, even 6 years after it was built I'd see it in droplets like this?
My 6+ year old just was driven in the hottest temps it's ever experienced two days ago....113F ambient...and I found symetrical oozing of cosmoline at the same spot on both headlamps. Thick and oily, but cleaned right up. Here is one of them.

Attached Images
 
__________________

2015 VO 228i 6MT/Track Handling,Tech,Cold,Premium,Lighting,Driver Assistance Pkgs/KCDesign Strut Brace/M2 LCAs/Rogue SSK/BBS SR Wheels/Michelin PS4S/ER Chargepipe/AA Intercooler/Dinan Shockware/MPerformance Spoiler/Black Kidney Grilles/Xpel Ultimate PPF & Prime XR+ Tint/Adam's Ceramic
2018 Alpine White 330GT - 100% Stock
Appreciate 2
      08-01-2020, 03:45 PM   #5
BetweenTheWheels
Private
BetweenTheWheels's Avatar
United_States
48
Rep
59
Posts

Drives: 228i M Sport
Join Date: Nov 2019
Location: Virginia USA

iTrader: (0)

Quote:
Originally Posted by Sportstick View Post
Quote:
Originally Posted by BetweenTheWheels View Post
Wow, even 6 years after it was built I'd see it in droplets like this?
My 6+ year old just was driven in the hottest temps it's ever experienced two days ago....113F ambient...and I found symetrical oozing of cosmoline at the same spot on both headlamps. Thick and oily, but cleaned right up. Here is one of them.

Those pics are helpful. My residue doesn't look like that. Mine is thinner and more engine oil like... concerning, but I have no clue where it would come from and why it would be appearing where it does.
__________________
Current: 228i M Sport
Former: E85 Z4 3.0, E89 Z4 35is, 28 others....
Appreciate 0
      08-01-2020, 04:17 PM   #6
Sportstick
Brigadier General
Sportstick's Avatar
United_States
2552
Rep
4,118
Posts

Drives: '15 228i and '18 330i GT
Join Date: Mar 2014
Location: Southwest USA

iTrader: (0)

Quote:
Originally Posted by BetweenTheWheels View Post
Those pics are helpful. My residue doesn't look like that. Mine is thinner and more engine oil like... concerning, but I have no clue where it would come from and why it would be appearing where it does.
Not sure what your current conditions are, but the thicker appearance you see in my photos are after the car returned and sat in our 78F air conditioned garage for two days. It could not have flowed into this position in its current viscosity. If you are in a warm area, the more liquid state of cosmoline may be explainable and still be the most reasonable explanation or it may be overspray from a service visit. I note both locations are near latches.
__________________

2015 VO 228i 6MT/Track Handling,Tech,Cold,Premium,Lighting,Driver Assistance Pkgs/KCDesign Strut Brace/M2 LCAs/Rogue SSK/BBS SR Wheels/Michelin PS4S/ER Chargepipe/AA Intercooler/Dinan Shockware/MPerformance Spoiler/Black Kidney Grilles/Xpel Ultimate PPF & Prime XR+ Tint/Adam's Ceramic
2018 Alpine White 330GT - 100% Stock
Appreciate 1
      08-03-2020, 04:50 PM   #7
p912guy
Captain
290
Rep
629
Posts

Drives: 2016 M235i Convertible
Join Date: Jul 2016
Location: The Ville

iTrader: (0)

Garage List
Agree with Sportstick - definitely cosmoline. It can ooze out of lots of places and in ways you'd never guess, especially in the summer.
__________________
16 BMW M235i Alpine White Convertible / MT (Daily Driver)
16 Audi Q5 3.0T (Wife's Daily Driver)
66 Porsche 912 (Project)
17 GMC Canyon Denali Long Bed 4x4 (Tailgatin, Haulin & Towin)
various 'one design' sailboats / stinky hockey gear
Appreciate 1
      08-03-2020, 07:28 PM   #8
High Desert
New Member
United_States
11
Rep
17
Posts

Drives: BMW 228i X Convert
Join Date: Apr 2020
Location: Rocky Mnts.

iTrader: (0)

If you got the car serviced lately, the techs usually spray a aerosol grease on moving parts like latches. Many times a lithium type grease. It picks up dust/dirt. They use a thinner version on door latches so it does not stain clothing. Under the hood, not too much.
Appreciate 1
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 01:13 AM.




2addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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