[2fast4]

Hey guys,
I searched hi and lo but no hard answer about this. I'm talking about the big O-ring seal that goes inside the oil filter "cap"... not the oil filter housing gasket. I've done that already, thanks.

I noticed mist of motor oil "spray" out to the surrounding areas...upper coolant hose, alternator bracket, and IMPORTANTLY the alternator itself.
This must be from under high boost and air pressure build up from crank case, I guess. Not that stock boost is any cleaner.

I see moderate amount of oily gunk built up on the face of the alternator.
If good amount of oily vapor does get sucked into the alternator, it'll kill the alternator! And probably happen in the middle of freeway or in some unfortunate situations...knock on wood.

I noticed that as it gets older, the more of this crap spitting out, because of, I guess, weaker and thinner O-ring it becomes. Definitely more noticeable on tuned cars. For now, I take off the air inlet off to get access of alternator face and wipe down with carb cleaner.

As of right now, if someone carry Viton seal it'd be best bet.
Do we need to carry more of this O-rings and change it in between oil changes? It seems common on all BMWs. Sucks

[BashShah]

I saw a leak from the oil filter cap....once.
Not sure if this is related.....but
My issue turned out to be that the oil filter cap was not seated all the way to the base of the cap touching the filter housing.

Also, note that the big o-ring is not supposed to be all the way to the base of the cap.

DN

[2fast4]

I would've taken picture but I wiped it down already.

It looks though as if I need to clean the alternator face, I'd have to drain coolant, take the top water hose off, and the air inlet to the turbo to gain access....or take some small wire brush and carb cleaner and hope for the best.

[2fast4]

Originally Posted by DarkNemesis

I saw a leak from the oil filter cap....once.
Not sure if this is related.....but
My issue turned out to be that the oil filter cap was not seated all the way to the base of the cap touching the filter housing.

Also, note that the big o-ring is not supposed to be all the way to the base of the cap.

DN

I see on the cap that says "25.5 nm". Which is about 18 ft lbs torque.
One thing to note is that the O-ring seal is so thin that when I take the cap off and put it back on, it's like almost no resistance. Very different from a brand new filter/seal going in.

Also I don't see that the seal is at the base of the cap either.

[Meeni]

You are supposed to replace it at every oil change. It gets thin and frail with time.

[mike3000fl]

Originally Posted by Meeni

You are supposed to replace it at every oil change. It gets thin and frail with time.

exactly. if he had bought the "mann" filters, he would get a new crush washer, new oring, and a new small oring for the stem. i can get the mann ones at autozone.

[2fast4]

Originally Posted by Miteni

You are supposed to replace it every oil change. It gets thin and frail with time.

Ok guys. Cut me some slack here... I did that about 4 miles ago.

Perhaps it jumped to wrong groove...I'll check in the am

[BashShah]

Originally Posted by 2fast4

Ok guys. Cut me some slack here... I did that about 4 miles ago.

Perhaps it jumped to wrong groove...I'll check in the am

Go to this link.
http://www.ecstuning.com/BMW-E90-330i-N52_3.0L/ES24025/

2nd grove from bottom.
That's where it goes.
Tighten till base touches ofh.

Don't forget to oil the big o ring before installing.

DN