N55 oil cap leak ?

ovo Dima · 08-27-2021, 12:52 PM

Need advice. I have a 2014 bmw 435. About 100 miles ago I've changed the oil cooler gasket with it change the filter and a new o ring for the oil cap. Oil seems to seep from the oil cap…. Should I replace the cap ?

KeatonK · 08-27-2021, 01:19 PM

I had this happen to me recently. Be careful! I was losing a lot of oil on long drives. Easy fix. Install new cap, top off the oil and your good to go! I did have to go to autozone and get the right size cap wrench.

F32Fleet · 08-27-2021, 03:37 PM

Perhaps the gasket for the filter cap is pinched?

ovo Dima · 08-27-2021, 06:01 PM

Quote:

Originally Posted by F32Fleet

Perhaps the gasket for the filter cap is pinched?

I did an oil change about 4-5k miles ago and it's been sipping since. Just replaced the filter and the o ring. Lubricated the O ring while putting it back on. Could be a possibly pinched

ovo Dima · 08-27-2021, 06:03 PM

Quote:

Originally Posted by KeatonK

I had this happen to me recently. Be careful! I was losing a lot of oil on long drives. Easy fix. Install new cap, top off the oil and your good to go! I did have to go to autozone and get the right size cap wrench.

Most likely the route I'm gonna take with this inconvenience

Orion4 · 08-27-2021, 06:58 PM

Did you use the OEM/Mann Oil Filter package for your car or another from the Auto parts store. Had a neighbor a couple of years ago use the STP package identified as correct for his 2014 335i. Leaked immediately around the filter cap. When we pulled it off, discovered the o-ring was not round, but oval in shape across the width, thereby not sealing. He filed a complaint with STP , but heard nothing

ovo Dima · 08-27-2021, 08:54 PM

Quote:

Originally Posted by Orion4

Did you use the OEM/Mann Oil Filter package for your car or another from the Auto parts store. Had a neighbor a couple of years ago use the STP package identified as correct for his 2014 335i. Leaked immediately around the filter cap. When we pulled it off, discovered the o-ring was not round, but oval in shape across the width, thereby not sealing. He filed a complaint with STP , but heard nothing

Hmm no I didn't use the MANN one. Just went with MAHLE off FCP euro…

Orion4 · 08-28-2021, 04:04 PM

The Mahle is just as good as the Mann. Check for nicks, cuts or partially crushed o-ring. By any chance did you use a tool like a slip wrench around the base of the cap to remove it? If so, it may be deformed. Just "spit-balling" here.

ovo Dima · 08-28-2021, 05:55 PM

Quote:

Originally Posted by Orion4

The Mahle is just as good as the Mann. Check for nicks, cuts or partially crushed o-ring. By any chance did you use a tool like a slip wrench around the base of the cap to remove it? If so, it may be deformed. Just "spit-balling" here.

That's an accurate hypothesis. I actually did, but it's been seeping prior to my intervention

TheJungatron · 08-28-2021, 08:37 PM

Quote:

Originally Posted by ovo Dima

That's an accurate hypothesis. I actually did, but it's been seeping prior to my intervention

Hey ovo Dima, if you plan on keeping the car for a while just start ordering from FCP euro. they offer free replacement parts for as long as you own the car.

I would get an oil filter cap and anything else you need from them.

Have a great weekend!

Shadysu · 08-30-2021, 01:21 AM

My cap caused a small leak that built up over time, replaced with a nice bilet one, fixed the leak.

Heat and over torque can cause it to crack

Orion4 · 08-31-2021, 04:38 PM

I second the recommendation of Jungatron.

08-27-2021, 12:52 PM	#1
ovo Dima New Member 3 Rep 9 Posts Drives: 2014 BMW 435xi Join Date: Aug 2021 Location: New Jersey iTrader: (0)	N55 oil cap leak ? Need advice. I have a 2014 bmw 435. About 100 miles ago I've changed the oil cooler gasket with it change the filter and a new o ring for the oil cap. Oil seems to seep from the oil cap…. Should I replace the cap ? Attached Images
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08-27-2021, 01:19 PM	#2
KeatonK New Member 0 Rep 6 Posts Drives: 2013 335i Join Date: Oct 2015 Location: Temecula, Ca iTrader: (0)	I had this happen to me recently. Be careful! I was losing a lot of oil on long drives. Easy fix. Install new cap, top off the oil and your good to go! I did have to go to autozone and get the right size cap wrench. __________________ 2013 335i Alpine White 88k miles and going! bm3 stage 1, jb4 (map 0), ER Downpipe, M Performance Exhaust, ER chargepipe, bms intake, Fuel-it Stage 2 LPFP, HR Sport Springs, 19" Morr FS77 M Performance Alcantara Steering Wheel
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08-27-2021, 03:37 PM	#3
F32Fleet Lieutenant General 3608 Rep 10,373 Posts Drives: 2015 435i Join Date: May 2005 Location: Southeastern US iTrader: (0)	Perhaps the gasket for the filter cap is pinched? __________________ "Drive more, worry less. " 435i, MPPK, MPE, M-Sport Line
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08-27-2021, 06:58 PM	#6
Orion4 Lieutenant Colonel 481 Rep 1,574 Posts Drives: 2013 335i Sport Line Sedan Join Date: Aug 2009 Location: Melbourne, FL iTrader: (0)	Did you use the OEM/Mann Oil Filter package for your car or another from the Auto parts store. Had a neighbor a couple of years ago use the STP package identified as correct for his 2014 335i. Leaked immediately around the filter cap. When we pulled it off, discovered the o-ring was not round, but oval in shape across the width, thereby not sealing. He filed a complaint with STP , but heard nothing
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08-28-2021, 04:04 PM	#8
Orion4 Lieutenant Colonel 481 Rep 1,574 Posts Drives: 2013 335i Sport Line Sedan Join Date: Aug 2009 Location: Melbourne, FL iTrader: (0)	The Mahle is just as good as the Mann. Check for nicks, cuts or partially crushed o-ring. By any chance did you use a tool like a slip wrench around the base of the cap to remove it? If so, it may be deformed. Just "spit-balling" here.
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08-30-2021, 01:21 AM	#11
Shadysu Private 23 Rep 87 Posts Drives: 2017 M240i Join Date: Sep 2020 Location: Canada iTrader: (0)	My cap caused a small leak that built up over time, replaced with a nice bilet one, fixed the leak. Heat and over torque can cause it to crack
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08-31-2021, 04:38 PM	#12
Orion4 Lieutenant Colonel 481 Rep 1,574 Posts Drives: 2013 335i Sport Line Sedan Join Date: Aug 2009 Location: Melbourne, FL iTrader: (0)	I second the recommendation of Jungatron.
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