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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 06-27-2015, 08:33 PM
530iblue 530iblue is offline
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02 530 - blown oil filter cap

Help!

I started my car this morning and within 5 seconds of being idle I heard a loud thick. Immediately turned off the engine and open the hood. To my surprise there are oils everywhere in engine compartment. I noticed a large crack in my oil filter housing cap.

Can i just replace the cap with a new one? I am worried there's any part (eg: failing CCV/PCV) that caused this problem?

Thanks all for your help.
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  #2  
Old 06-27-2015, 08:42 PM
cn90 cn90 is offline
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Mine cracked at 100K, previous mechanic (or owner over-tightened it).

Use dealer part only, do NOT use aftermarket.
It is cheap, about $26 at local BMW dealer.
When tightening it, just go until it stops, then snug with ONLY 1 finger.
No need to go to 25 Nm.

I have done this (snug with 1 finger) for 10 years, zero leak.
Just make sure the O-ring sits in the correct groove. Info in forum.
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  #3  
Old 06-27-2015, 08:46 PM
530iblue 530iblue is offline
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Quote:
Originally Posted by cn90 View Post
Mine cracked at 100K, previous mechanic (or owner over-tightened it).

Use dealer part only, do NOT use aftermarket.
It is cheap, about $26 at local BMW dealer.
When tightening it, just go until it stops, then snug with ONLY 1 finger.
No need to go to 25 Nm.

I have done this (snug with 1 finger) for 10 years, zero leak.
Just make sure the O-ring sits in the correct groove. Info in forum.
Thanks! Do you think what happened to my car would damage the engine?
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2001 Highlander Gold 130,000 miles
2002 530iA Toledo Blue 170,000 miles
2007 CRV Nighthawk Pearl 63,000 miles

Last edited by 530iblue; 06-27-2015 at 08:55 PM.
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  #4  
Old 06-27-2015, 09:19 PM
cn90 cn90 is offline
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Mein Auto: 1998 528i 5-sp 140K+
- New cap

- New filter, BMW or Mahle

- Add oil, check dipstick.

- Wipe spilled oil.

- Start engine and report back re any noise.
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  #5  
Old 06-27-2015, 09:50 PM
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bluebee bluebee is offline
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I agree with cn90.
Replace the cap.
See what happened afterward.

There's not much in the bestlinks for the oil filter cap, except this:
- What do do if the oil filter cap won't come off (1) & is the V8 oil filter housing cap the same part number as the I6 OFH cap (1) & what happens when the oil filter cap develops cracks (x)

Where "x" is gonna be this thread.

Since we will refer others to this thread, would you kindly snap a picture and post it here for us.

EDIT: Here is an 800x600 sized picture of the OP's oil filter housing cap.
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See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 06-29-2015 at 07:56 AM.
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  #6  
Old 06-27-2015, 10:13 PM
ca2014mp2 ca2014mp2 is online now
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Quote:
Originally Posted by cn90 View Post
- New cap

- New filter, BMW or Mahle

- Add oil, check dipstick.

- Wipe spilled oil.

- Start engine and report back re any noise.
**** then drink beer..***
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Series E39 Vehicle code DP63 Model 528ITA Engine M52TU
Body type OTHER Catalog model USA Production date 1999 / 06
Transmission Automatic Steering Left Catalyzer YES

Production FROM : 1998/09/01 TO : 1999/08/31
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  #7  
Old 06-28-2015, 09:48 AM
530iblue 530iblue is offline
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Quote:
Originally Posted by bluebee View Post
I agree with cn90.
Replace the cap.
See what happened afterward.

There's not much in the bestlinks for the oil filter cap, except this:
- What do do if the oil filter cap won't come off (1) & is the V8 oil filter housing cap the same part number as the I6 OFH cap (1) & what happens when the oil filter crack develop cracks (x)

Where "x" is gonna be this thread.

Since we will refer others to this thread, would you kindly snap a picture and post it here for us.
TIA
Here's the picture of blown off oil filter cap ;-{
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  #8  
Old 06-28-2015, 11:36 AM
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bluebee bluebee is offline
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Quote:
Originally Posted by 530iblue View Post
Here's the picture of blown off oil filter cap ;-{
Wow. I didn't expect the circular-shaped crack!

I would have expected a radial crack instead.
Thanks for posting it.

Do you think it was cranked down too far perhaps?
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Last edited by bluebee; 06-29-2015 at 07:58 AM.
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  #9  
Old 06-28-2015, 12:42 PM
530iblue 530iblue is offline
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Quote:
Originally Posted by bluebee View Post
Wow. I didn't expect the circular-shaped crack!


I would have expected a radial crack instead.
Thanks for posting it.

Do you think it was cranked down too far perhaps?
Hi,
Not sure if you are asking if it was over torque (too tight)?
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  #10  
Old 06-28-2015, 03:01 PM
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540iman 540iman is offline
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EXACTLY how one would expect the crack to look when it was cranked down too hard. No doubt about it.
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  #11  
Old 06-28-2015, 04:21 PM
530iblue 530iblue is offline
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Quote:
Originally Posted by 540iman View Post
EXACTLY how one would expect the crack to look when it was cranked down too hard. No doubt about it.
Well, the last oil change was more than 6months ago and no one has ever touch the oil filter cap after that. This should have happen sooner (few days after the oil change took place) if it was over torque?

Maybe too much oil pressure or poor oil circulation or failing OFH sensor? I couldn't think of anything else... Your input is highly appreciated.

Thanks,
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  #12  
Old 06-28-2015, 05:18 PM
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bluebee bluebee is offline
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Quote:
Originally Posted by 540iman View Post
EXACTLY how one would expect the crack to look when it was cranked down too hard. No doubt about it.
I can't imagine any other reason.

Quote:
Originally Posted by 530iblue View Post
Maybe too much oil pressure or poor oil circulation or failing OFH sensor?
Maybe.
But I doubt it.
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  #13  
Old 06-28-2015, 07:18 PM
cn90 cn90 is offline
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Crack was probably microscopic, waiting for mileage, heat to eventually fail.

What is the final verdict, did you fix the problem, fill with oil and start the engine?
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  #14  
Old 06-28-2015, 08:32 PM
530iblue 530iblue is offline
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Quote:
Originally Posted by cn90 View Post
Crack was probably microscopic, waiting for mileage, heat to eventually fail.

What is the final verdict, did you fix the problem, fill with oil and start the engine?
Tomorrow I will put in new cap, filter (BMW) and fill oil. Will provide update ASAP. Wish me luck!
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  #15  
Old 06-29-2015, 07:44 AM
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bluebee bluebee is offline
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Quote:
Originally Posted by 530iblue View Post
Tomorrow I will put in new cap, filter (BMW) and fill oil. Will provide update ASAP. Wish me luck!
One thought.
I can't tell from the picture, but, did the OLD CAP have an O-RING?

If not, maybe someone torqued it down without the new o-ring, hoping to seal the leak with plastic against plastic instead of rubber against plastic?

Either way, when you change your oil, please read these two threads:
- Cn90 How to change your oil; and Bluebee how NOT to change your oil!
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Last edited by bluebee; 06-29-2015 at 07:50 AM.
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  #16  
Old 06-29-2015, 07:49 AM
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bluebee bluebee is offline
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Another thought comes to mind other than a possible missing oil filter o-ring:

Do you think there is a chance that the old oil filter was TOO TALL?

Some of the Fram/STP oil filters I used (when I was younger and stupid before the guys here set me straight) had thick rubber bottoms.

Since this is a thread we will refer many others to, please, if you can, snap a picture of the underside of the cap (where the o-ring would be) and the inside of the cap (to see if there are any round indentations).

Also it would be nice to have a side-by-side comparison of the HEIGHT of the old filter next to the new one.

Caption: This is my first oil-filter DIY; notice the WRONG FILTER!

Caption: This is a later DIY (after the guys set me straight):

See also the oil-filter selection thread below:
- Glovebox printout of the dozen lists and procedures and specifications to print for emergency use (1) and how to save $ money to qualify for free shipping on UPS/DHL/USPS/FedEx by stocking O-rings & gaskets & bulbs & vacuum hoses & fuses & wiper blade inserts & belts & bearings & oil filters & cabin air filters & engine air filters & fluids in your garage whenever ordering from the recommended parts suppliers.
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See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 06-29-2015 at 07:51 AM.
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  #17  
Old 07-02-2015, 11:56 AM
530iblue 530iblue is offline
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I apologize for taking too long to post an update. I did a complete oil change (7 quarts of Mobil 5w-30 advance full synthetic) and put in new drain plug washers, new oil filter (MANN) and new ohf cap (BMW OEM) with new O-ring. Started the engine without any problem and I don't hear any funky sound at all. Took it for short distance drive and response seems normal like what it was before. Here's the photo of the engine bay with new OHF cap.

Thanks guys for all your input. Much appreciated.
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  #18  
Old 07-02-2015, 12:01 PM
530iblue 530iblue is offline
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Quote:
Originally Posted by bluebee View Post
One thought.
I can't tell from the picture, but, did the OLD CAP have an O-RING?

If not, maybe someone torqued it down without the new o-ring, hoping to seal the leak with plastic against plastic instead of rubber against plastic?

Either way, when you change your oil, please read these two threads:
- Cn90 How to change your oil; and Bluebee how NOT to change your oil!
I have confirmed the old cap has an O-RING.
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  #19  
Old 07-02-2015, 01:18 PM
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bluebee bluebee is offline
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Quote:
Originally Posted by 530iblue View Post
I have confirmed the old cap has an O-RING.
Thanks for confirming, as I didn't see it in the before picture.
You're a good photographer, because the two after pictures are gorgeous!
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