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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Sludge in engine n52 330i



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      09-25-2013, 09:19 PM   #1
Napoli1926
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Sludge in Engine n52 330i

Just this afternoon I went to change my oil and noticed some buildup inside the engine looking in from the oil cap....I normally follow Bmw oil change intervals with bmw 5w-30 oil but last oil change I used Castrol 5w-30 from autozone which the habberstadt bmw dealership told me was the same thing as BMW oil, Well come to find out now that's a load of bullshit...I went just under 10k on this OCI and boy am mad for taking the service advisor Anselmo Paulinos word about being the same oil....these r the pics of what I could manage to take with my phone camera....Any suggestions on What to do?????... I was thinking of using a liqui Molly engine flush be4 my next oil change also Bmw told me about an induction service for about 200$.....Please help, ALL SUGGESTIONS WELCOME
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      09-26-2013, 09:14 AM   #2
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Quote:
Originally Posted by Napoli1926 View Post
Just this afternoon I went to change my oil and noticed some buildup inside the engine looking in from the oil cap....I normally follow Bmw oil change intervals with bmw 5w-30 oil but last oil change I used Castrol 5w-30 from autozone which the habberstadt bmw dealership told me was the same thing as BMW oil, Well come to find out now that's a load of bullshit...I went just under 10k on this OCI and boy am mad for taking the service advisor Anselmo Paulinos word about being the same oil....these r the pics of what I could manage to take with my phone camera....Any suggestions on What to do?????... I was thinking of using a liqui Molly engine flush be4 my next oil change also Bmw told me about an induction service for about 200$.....Please help, ALL SUGGESTIONS WELCOME
what's your mileage?
looks to me like that came from years of neglect, not from one oil change cycle.
I would take the $200 dealer service.
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      09-26-2013, 09:27 AM   #3
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Yea that's definitely not normal at all. I sold my 06 e90 325 with 97k on it and there wasn't an ounce of sludge buildup inside and all i ever used was 0w40 mobil 1 or bmw 5-30 at the bmw parts counter. Do whatever to flush that shit out and do another oil change.
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      09-26-2013, 09:29 AM   #4
Napoli1926
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Originally Posted by hot&now
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Originally Posted by Napoli1926 View Post
Just this afternoon I went to change my oil and noticed some buildup inside the engine looking in from the oil cap....I normally follow Bmw oil change intervals with bmw 5w-30 oil but last oil change I used Castrol 5w-30 from autozone which the habberstadt bmw dealership told me was the same thing as BMW oil, Well come to find out now that's a load of bullshit...I went just under 10k on this OCI and boy am mad for taking the service advisor Anselmo Paulinos word about being the same oil....these r the pics of what I could manage to take with my phone camera....Any suggestions on What to do?????... I was thinking of using a liqui Molly engine flush be4 my next oil change also Bmw told me about an induction service for about 200$.....Please help, ALL SUGGESTIONS WELCOME
what's your mileage?
looks to me like that came from years of neglect, not from one oil change cycle.
I would take the $200 dealer service.
85k miles just follow bmw routine maint it wasn't lookin like that before this past oil change interval...I usually check
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      09-26-2013, 10:20 AM   #5
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Flush everything, clean it out and start over. Maybe even do another oil change after 1k just to make sure all the old shit is out.
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      09-26-2013, 01:40 PM   #6
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If your only changing your oil when the cars condition based service tells you to, I would say that's normal engine operation.

Also we dont know what your driving conditions are like.

highway vs. city miles
length(time) of run cycles
and driving habits/style.

Taking the dealer service will not hurt it and changing your oil every 7500 miles is a happy medium for most owners.
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      09-27-2013, 08:47 PM   #7
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I wonder if this is due to bad crankcase ventilation
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      09-28-2013, 05:50 AM   #8
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Yikes- Maybe the new oil had a different detergent blend that loosened up residue that was already in your engine.
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