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Old 06-15-2020, 06:03 PM
BoringMax BoringMax is offline
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N55 Does it have a common oil leak?

A dealer told me that the 2012 335i N55 has a common problem with an oil leak near the oil filter flange. Has any body heard of this problem? I ask because my mechanic did an oil change to it and said it has a pretty good engine leak from somewhere top of the engine.
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Old 06-15-2020, 08:14 PM
FredoinSF FredoinSF is offline
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Valve cover gasket and oil filter housing gasket leaks have been common for more than 20 years. No change from bmw. Ironically all in the name of the environment because of the gasket material.


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Old 06-15-2020, 09:09 PM
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Oil filter housing gasket is a known problem. Very inexpensive DIY, albeit I'd give it a moderate difficult rating. There are many DIY videos out there, but the key take away is having a good quality set of sockets with the right extenders and a universal joint to do the job. Involves loosening up the intake to reach one of the bolts.

If you are not comfortable working on your car, I would not attempt it as it's not a beginner level repair. Tools aside, I think the set of gaskets can be had for $25ish or so. You'll also need a small amount of coolant (figure another $20) to top up the tank as you'll lose a bit when disconnecting the hoses.

If you are comfortable working on your car, but it's your first time doing this job, I'd plan on 2 hours.
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Old 06-26-2020, 04:12 PM
BoringMax BoringMax is offline
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Thanks for the info

Last edited by BoringMax; 06-26-2020 at 04:14 PM.
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Old 06-26-2020, 04:13 PM
BoringMax BoringMax is offline
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Thanks for the info guys really helped out
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