Oil leak behind serpentine belt

whenasked · 03-19-2011, 10:00 PM

car: E90 06 325i, 56K miles, under CPO till sep 11

Folks, need a help here. Seeing a slight Oil leak on Engine Block just behind Serpentine Belt area and below head gasket. No leaks on gasket under the Engine Cover though.

fyi, lifters were replaced last summer for ticking noise.

Should I take it in for check with dealer. If it is something, that needs, changed, will it covered under CPO?

ctuna · 03-19-2011, 10:29 PM

They use aluminum head bolts because of the magnesium block this is a common problem or at least the most common reported for oil leakage in this model . There are many threads on it. If its under CPO you have a good chance of getting them replaced .

http://www.e90post.com/forums/showth...ght=head+bolts

bumere90 · 03-19-2011, 10:53 PM

could it be the oil filter housing gasket?

John 070 · 03-19-2011, 10:57 PM

Quote:

Originally Posted by ctuna

They use aluminum head bolts because of the magnesium block this is a common problem or at least the most common reported for oil leakage in this model . There are many threads on it. If its under CPO you have a good chance of getting them replaced .

http://www.e90post.com/forums/showth...ght=head+bolts

why only a good chance? Seems like it should be covered, although don't quote me because I've found that BMW resists everything even under a full factory warranty, let alone an extended one....

whenasked · 03-19-2011, 11:46 PM

Time to fix an appointment with dealer before CPO runs out. I really like the car ..but after CPO dries up

?

whenasked · 03-23-2011, 10:19 PM

It was Oil Filter Housing Gasket..couple of hours at dealer..under CPO..could not be more happier..(bumere90..you were spot on)

I read in a thread (after I got the car) that coolant must be drained and refilled. But could not see any reference to that in the work order.

bmw4jh · 07-21-2011, 09:48 PM

My vehicle had (what I thought) was a small oil leak from the oil filter housing gasket. I called the dealership to make an appoinment for service since I knew my CPO warranty was about to expire. Well...my warranty was expiring the next day. Needles to say, I took my car to dealership that day and dropped it off. I got a loaner (335d, what a car!). The next day I called my SA and he said that two head bolts sheared off and that was causing the oil leak but, BMW would cover it under the CPO warranty. The dealership kept the car for 5 days, including the weekend.
They ended up replacing the head gasket and all related hardware and fluids. My final bill $53 plus change. I am a happy camper with a renewed trust in dealerships...So, if you have an oil leak it may be something simple...or not. If you have a warranty, take it to the dealership right away. if you don't...good luck!

03-19-2011, 10:00 PM	#1
whenasked Private First Class 19 Rep 114 Posts Drives: E90 Join Date: Sep 2009 Location: US iTrader: (0)	Oil leak behind serpentine belt car: E90 06 325i, 56K miles, under CPO till sep 11 Folks, need a help here. Seeing a slight Oil leak on Engine Block just behind Serpentine Belt area and below head gasket. No leaks on gasket under the Engine Cover though. fyi, lifters were replaced last summer for ticking noise. Should I take it in for check with dealer. If it is something, that needs, changed, will it covered under CPO?
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03-19-2011, 10:29 PM	#2
ctuna Lieutenant General 2045 Rep 13,364 Posts Drives: 325xi 06 wagon MT Join Date: Jan 2010 Location: Santa Cruz, Ca iTrader: (0)	Could be the broken head bolt problem They use aluminum head bolts because of the magnesium block this is a common problem or at least the most common reported for oil leakage in this model . There are many threads on it. If its under CPO you have a good chance of getting them replaced . http://www.e90post.com/forums/showth...ght=head+bolts
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03-19-2011, 10:53 PM	#3
bumere90 Grozniy 188 Rep 2,602 Posts Drives: Carless Join Date: Jan 2009 Location: FL iTrader: (12)	could it be the oil filter housing gasket? __________________ -fatman
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03-19-2011, 11:46 PM	#5
whenasked Private First Class 19 Rep 114 Posts Drives: E90 Join Date: Sep 2009 Location: US iTrader: (0)	Thanks Time to fix an appointment with dealer before CPO runs out. I really like the car ..but after CPO dries up?
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03-23-2011, 10:19 PM	#6
whenasked Private First Class 19 Rep 114 Posts Drives: E90 Join Date: Sep 2009 Location: US iTrader: (0)	It was Oil Filter Housing Gasket..couple of hours at dealer..under CPO..could not be more happier..(bumere90..you were spot on) I read in a thread (after I got the car) that coolant must be drained and refilled. But could not see any reference to that in the work order.
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07-21-2011, 09:48 PM	#7
bmw4jh Private 19 Rep 83 Posts Drives: F30 335i Join Date: Oct 2006 Location: Florida iTrader: (1)	CPO is great! My vehicle had (what I thought) was a small oil leak from the oil filter housing gasket. I called the dealership to make an appoinment for service since I knew my CPO warranty was about to expire. Well...my warranty was expiring the next day. Needles to say, I took my car to dealership that day and dropped it off. I got a loaner (335d, what a car!). The next day I called my SA and he said that two head bolts sheared off and that was causing the oil leak but, BMW would cover it under the CPO warranty. The dealership kept the car for 5 days, including the weekend. They ended up replacing the head gasket and all related hardware and fluids. My final bill $53 plus change. I am a happy camper with a renewed trust in dealerships...So, if you have an oil leak it may be something simple...or not. If you have a warranty, take it to the dealership right away. if you don't...good luck! __________________ F30 335i
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