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Oil filter housing and cap

7K views 5 replies 5 participants last post by  muchachos159 
#1 ·
My e46 has recently developed an oil leak. I got it checked out by a BMW mech in town and they're blaming it on the cap and the housing. They suggest replace both of them.

Since then I've kept a close eye on the cap and it's leaking a little but no where near the amount that's on the floor of my garage.

How likely is the housing to go bad? Do you guys think its more likely the housing gasket?

There's oil all down the front side of the engine, covering all the belts.

I don't really feel like paying the mech the $700 he quoted me to replace the housing.

Any thoughts?

She's an '01 330i auto.
 
#2 ·
Are you sure it's not leaking because of a bad gasket under the cap? Is the gasket even there? I had a little issue where the gasket on the 535i was too loose and actually fell out into the can while putting the cap back on ... leaked massive amounts of oil from under it.

As far as the housing itself ... as far as I know there's only one gasket between it and the engine; everything else is one piece. Unless it has somehow developed a crack (really doubt that one), that could be the only other issue -- I don't see why the whole thing should be replaced. :dunno
 
#6 ·
I have the issue right now, I am going to the dealer to purchase a new Filter Cap. I checked the gasket and it looks fine to me (on mine). I believe the cap is the issue and it may be that it got warped over time from heat exposure. I noticed this problem on my car (06 E90) failry recently and I have about 65k miles. When I retighted the cap and it did fine, but after 4-5 days it starts leaking again. The filter cap is only $40 bucks so its not too bad. I don't believe it is the housing.
 
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