[Shiny.E90]

Hello everyone! So I own an 07 335i sedan. Lately my car has been leaking oil onto the ground when I park, I smell oil burning and will see slight smoke from the hood. The cars valve cover gasket has been replaced 10,000 miles ago along with oil pan gasket. I got new turbos less than 5,000 miles ago. Any ideas on where to look? I noticed exhaust was getting on my downpipe towards the bottom right next to the connection of the downpipe to the rest of the exhaust. Any help/ideas/tips would be GREATLY appreciated. Thanks for reading

[WoodE30]

Oil filter housing leaking, cracked valve cover?

[Shiny.E90]

Originally Posted by WoodE30

Oil filter housing leaking, cracked valve cover?

Would the oil filter housing leak onto the exhaust though? I was thinking maybe a cracked valve cover

[neilvan]

Pain to check but if its neither of those, have a look at the turbo feed/drains? its possible a bolt is slightly loose or the line as a crack somewhere.

[Shiny.E90]

Originally Posted by neilvan

Pain to check but if its neither of those, have a look at the turbo feed/drains? its possible a bolt is slightly loose or the line as a crack somewhere.

I was thinking to check there as well but wanted to see what other people thought

[ECSTuning]

Cheater trick, run Liqui Moly Molygen for your next oil change. After a few days take a black light in a dark garage to the engine bay. It has an additive that'll glow under UV light.

As for leak locations, it sounds like you have a good plan for points to check. I'll say the oil feed tubes even on recently replaced turbos are beyond common, and usually one of my first places to check.

-James

[TheMidnightNarwhal]

Originally Posted by ECSTuning

Cheater trick, run Liqui Moly Molygen for your next oil change. After a few days take a black light in a dark garage to the engine bay. It has an additive that'll glow under UV light.

As for leak locations, it sounds like you have a good plan for points to check. I'll say the oil feed tubes even on recently replaced turbos are beyond common, and usually one of my first places to check.

-James

Since we're on the subject, does the Molygen UV last indefinitely or it's only a certain amount of miles. I recall hearing it only lasted a few miles but then someone told me no.

[tcphoto]

I'd shine a light around the exhaust manifold and look for oil stains. It could be incorrectly torqued valve cover bolts, an incorrectly seated VCG or cracked valve cover. The OFHG doesn't really leak onto anything except a belt, pulley or belly pan.