BMS Oil Catch Can Vacuum Side

mikeyoooooo · 04-23-2022, 04:01 PM

Is this normal for the oil to looks like this on the vacuum side of the BMS OCC? Oil inside of the engine is fine, I just changed the oil

Eriksson3_3 · 04-25-2022, 06:39 AM

Quote:

Originally Posted by mikeyoooooo

Is this normal for the oil to looks like this on the vacuum side of the BMS OCC? Oil inside of the engine is fine, I just changed the oil

From what I know, ( not a lot ). You either have a blown head gasket, your oil filter housing gasket is bad, or you don't let your car get up to full driving temperature when driving and you shut it off early, ( like if you work 5 minutes from home ).

zomski101 · 04-25-2022, 07:56 AM

Yes, it's normal, just a mixture of water, oil and cold temperature.

Dave92N54 · 04-25-2022, 10:58 AM

Quote:

Originally Posted by zomski101

Yes, it's normal, just a mixture of water, oil and cold temperature.

+1. Drive the car longer, and as it gets warmer out it will be less like this. Completely normal. In colder months I keep a glove on my can, may do nothing but I don't care.

mikeyoooooo · 05-07-2022, 11:09 AM

Thanks all, makes sense

mikeyoooooo · 05-07-2022, 11:12 AM

Quote:

Originally Posted by zomski101

Yes, it's normal, just a mixture of water, oil and cold temperature.

This is exactly what it looks like in both of my catch cans. Good to know they're doing their job!

BSM n54iS · 05-07-2022, 12:56 PM

Do you have a vtt crank case breather by chance?

mikeyoooooo · 05-07-2022, 04:08 PM

Quote:

Originally Posted by BdSM n54iS

Do you have a vtt crank case breather by chance?

I don't

N54_e90 · 05-10-2022, 09:32 AM

I have a Vtt breather cap, no engine covers or cowls, cold weather (canada) and my oil never looked like that in my catch can! Wtf!

Dave92N54 · 05-10-2022, 01:00 PM

Quote:

Originally Posted by N54_e90

I have a Vtt breather cap, no engine covers or cowls, cold weather (canada) and my oil never looked like that in my catch can! Wtf!

You probably don't take trips less than 20 minutes often, do you?

BSM n54iS · 05-10-2022, 02:45 PM

Quote:

Originally Posted by Dave92N54

You probably don't take trips less than 20 minutes often, do you?

I don't either really though, cold weather half the year.. I can't figure it out yet. Seeping through valve cover building up condensation

BSM n54iS · 05-14-2022, 01:47 PM

What pcv are you running with the BMS low side catch can?

04-23-2022, 04:01 PM	#1
mikeyoooooo Private First Class 28 Rep 169 Posts Drives: 2013 335is MT Join Date: Apr 2016 Location: New York iTrader: (0)	BMS Oil Catch Can Vacuum Side Is this normal for the oil to looks like this on the vacuum side of the BMS OCC? Oil inside of the engine is fine, I just changed the oil
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04-25-2022, 07:56 AM	#3
zomski101 Banned 56 Rep 147 Posts Drives: 2009 BMW 335i Join Date: May 2018 Location: Chicago, IL iTrader: (0)	Yes, it's normal, just a mixture of water, oil and cold temperature. Attached Images
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05-07-2022, 11:09 AM	#5
mikeyoooooo Private First Class 28 Rep 169 Posts Drives: 2013 335is MT Join Date: Apr 2016 Location: New York iTrader: (0)	Thanks all, makes sense
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05-07-2022, 12:56 PM	#7
BSM n54iS Brigadier General 2686 Rep 4,203 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	Do you have a vtt crank case breather by chance? __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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05-10-2022, 09:32 AM	#9
N54_e90 Don 52 Rep 300 Posts Drives: '09 E90 335xi Family Sedan Join Date: Jan 2017 Location: Your Mother's House iTrader: (0)	I have a Vtt breather cap, no engine covers or cowls, cold weather (canada) and my oil never looked like that in my catch can! Wtf!
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05-14-2022, 01:47 PM	#12
BSM n54iS Brigadier General 2686 Rep 4,203 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	What pcv are you running with the BMS low side catch can? __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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