Something looks burnt under oil cap

OnlyGerman · 10-16-2019, 04:16 PM

As title says...I was looking under the oil cap and saw something that looked burnt. Please see pictures.

ziekxq · 10-16-2019, 06:20 PM

That looks like black oil to me.

lsturbointeg · 10-16-2019, 11:35 PM

carbon build up? kinda blurry. can you focus more inside

m1256 · 10-17-2019, 06:56 AM

Oil sludge or burnt oil residue?

OnlyGerman · 10-17-2019, 10:24 PM

Attached better pictures. No sludge on oil cap or anywhere that I could see from naked eye.

doodlebro · 10-19-2019, 01:21 PM

Quote:

Originally Posted by XLife14

Attached better pictures. No sludge on oil cap or anywhere that I could see from naked eye.

Definitely carbon build up. If I saw that I'd tear the valve cover off and check the rest of the top end for problems. 57K miles on my N55 and that ledge is totally clean.

Surly73 · 10-20-2019, 07:23 AM

What's the maintenance history of the vehicle?

OnlyGerman · 10-20-2019, 06:45 PM

Service history was kinda sketchy after the second owner. Indy did a engine flush as he recommended it when I first bought it. Car drives fine, no other reasons to indicate neglect.

ziekxq · 10-20-2019, 08:23 PM

Quote:

Originally Posted by XLife14

Service history was kinda sketchy after the second owner. Indy did a engine flush as he recommended it when I first bought it. Car drives fine, no other reasons to indicate neglect.

How much was the engine flush and do you think it was worth it?

10-16-2019, 04:16 PM	#1
OnlyGerman Major 362 Rep 1,261 Posts Drives: F15, F13, F10, E60 Join Date: Jul 2019 Location: Sunshine State iTrader: (0)	Something looks burnt under oil cap As title says...I was looking under the oil cap and saw something that looked burnt. Please see pictures. Attached Images Last edited by OnlyGerman; 10-16-2019 at 04:23 PM..
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10-16-2019, 06:20 PM	#2
ziekxq Major 320 Rep 1,299 Posts Drives: 2011 535i xDrive Join Date: Feb 2016 Location: United States iTrader: (0)	That looks like black oil to me.
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10-16-2019, 11:35 PM	#3
lsturbointeg Lieutenant General 9153 Rep 14,522 Posts Drives: 2011 535i Jet Black Join Date: Aug 2014 Location: Asian lost in OH iTrader: (0)	carbon build up? kinda blurry. can you focus more inside __________________ ~F90Conversion~21"3Piece Forged AvantGardeWheels~KWV1Coilovers~CQUENCE slotted/drilled rotors~GoodridgeStainlesslines~MeisterschaftQuadEx haust~Akrapovic 4"tips~VRSF DP~VRSF CP~TurboSmart BOV~K&N filter~CarbonFiberExteriorComponents~GladenAlphaCo mponents~MatchUp7BMW~Punch P300-12T~ Follow me on Instagram: lsturbointeg
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10-17-2019, 06:56 AM	#4
m1256 Private 31 Rep 97 Posts Drives: 2014 BMW x1 sdrive28l Join Date: Sep 2018 Location: socal iTrader: (0)	Oil sludge or burnt oil residue?
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10-17-2019, 10:24 PM	#5
OnlyGerman Major 362 Rep 1,261 Posts Drives: F15, F13, F10, E60 Join Date: Jul 2019 Location: Sunshine State iTrader: (0)	Attached better pictures. No sludge on oil cap or anywhere that I could see from naked eye. Attached Images
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10-20-2019, 07:23 AM	#7
Surly73 Lieutenant Colonel 534 Rep 1,873 Posts Drives: '11 535xi 8AT KWv3 MPE MHD xHP Join Date: May 2012 Location: Oakville, Ontario iTrader: (1)	What's the maintenance history of the vehicle?
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10-20-2019, 06:45 PM	#8
OnlyGerman Major 362 Rep 1,261 Posts Drives: F15, F13, F10, E60 Join Date: Jul 2019 Location: Sunshine State iTrader: (0)	Service history was kinda sketchy after the second owner. Indy did a engine flush as he recommended it when I first bought it. Car drives fine, no other reasons to indicate neglect.
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