Yellow Sludge When topping up oil
Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 5 Series
Forum Discription: This forum will deal with any issues on the BMW 5 Series (E12, E28, E34, E39, E60 & E61)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=46407
Printed Date: 18-May-2024 at 07:28
Topic: Yellow Sludge When topping up oil
Posted By: wackenzie
Subject: Yellow Sludge When topping up oil
Date Posted: 01-March-2010 at 15:17
|
I was topping up with oil this afternoon and noticed some
fairly bright yellow scum around the top inside of the rocker cover. Is this something to worry about? cheers Pete. |
Replies:
Posted By: jetsetwilly2000
Date Posted: 01-March-2010 at 15:25
|
It might be! But hopefully not. 'Mayonnaise' is caused by water in the oil, one cause of which is a blown head gasket, but at this time of year it could just be a bit of condensation. Wipe it off and see if it recurs. Is it confined to just round the filler? What car/engine is it? Others with the same motor will no doubt know more. A good thrash is often reccommended, but obviously you don't want to do that unless you're fairly sure it's just condensation! ------------- E90 M3 DCT, E46 330d Touring, VW T5 wannabecamper Previous: Disco 3 TDV6, 2x E34 540i6, E34 535iS |
Posted By: wackenzie
Date Posted: 01-March-2010 at 15:29
|
Hi Sorry, should have said its an E39 2001, 520, not clued
up on which engine that is exactly. Water level is still fine, so hopefully condensation. cheers. |
Posted By: Sporty1
Date Posted: 01-March-2010 at 19:09
Does the car do lots of, mainly, short journeys? ------------- 
Sport Evolution Schwarz #043 |
wackenzie wrote:Posted By: wackenzie
Date Posted: 02-March-2010 at 08:25
|
Sporty, yeah a fair amount of small ones, the daily run to
work is +14 miles each way, and then often some small 2-3 miles during the day. cheers Peter. |
Posted By: jetsetwilly2000
Date Posted: 02-March-2010 at 10:42
|
Probly just condensation then. Wipe it off, take the car out and thrash the nuts off it, wipe off again and see what happens. Might consider an oil change too if it's close to needing one...
------------- E90 M3 DCT, E46 330d Touring, VW T5 wannabecamper Previous: Disco 3 TDV6, 2x E34 540i6, E34 535iS |
Posted By: wackenzie
Date Posted: 02-March-2010 at 10:57
|
thanks I'll let you know if it comes back, will give it a
belt into Glasgow tonight and see how it looks in the morning. 
|
Posted By: bulletproofbomb
Date Posted: 02-March-2010 at 22:07
|
Definitely just condensation from relatively short journies. Your CATs will feel it too, so a few longer runs are well worthwhile, and maybe some thrashing too, once it's all nice and warm. ------------- e34 540iT 6-speed |