Where is this oil leak coming from

Riceball777 · 08-06-2015, 03:57 PM

I just bought a 2007 335i bone stock with 92,000 miles. I left the car on jack stands in my garage for about 5 days because i just installed a vrsf 7 inch intercooler and downpipes.

I notice this small oil leak where the engine meets the transmission. Its really hard to tell where the leak is coming from but if i were to guess I would think its the oil pan gasket. It also does not leak very much. If i wipe it clean i might 1 or 2 drips ever other day when it was on jack stands not running.

LQQKOUT · 08-06-2015, 04:01 PM

I have a similar leak. I tightened the oil pan bolts 1/8 turn and it seamed to help. I'll have to change the pan gasket in the future.

winn3r · 08-06-2015, 04:12 PM

Valve cover gasket caused my oil leak.

kong24680 · 08-06-2015, 04:53 PM

I have around the same mileage, and just had to change oil pan, valve cover, and main oil filter housing gasket. Seems like 75-90k miles is when these gaskets start to deteriorate.

MadeInPhilly · 08-06-2015, 05:12 PM

Did you see my thread?

http://www.e90post.com/forums/showthread.php?t=1150196

I narrowed it down to either the oil pan gasket or rear main seal. I have already done the Valve Cover gasket and Oil Filter Housing Gasket.

I have read some members trying to tighten the aluminum one time use bolts. Many of them have snapped them so be careful.

sankohuy · 08-11-2015, 07:12 PM

Check the valve cover gasket and the oil filter housing gasket

924er · 08-11-2015, 07:15 PM

Quote:

Originally Posted by sankohuy

Check the valve cover gasket and the oil filter housing gasket

Do this first then move on to either the main seal or oil pan

Riceball777 · 08-12-2015, 05:00 AM

the oil filter housing gasket is new and not leaking and i just changed plugs and coils and have a very good look at the valve cover and i do not think its leaking from there. So its either the oil pan gasket or the rear main sear right?

musc · 08-12-2015, 05:06 AM

Oil pan gasket at that mileage is pretty common to have issues.

MadeInPhilly · 08-12-2015, 04:04 PM

I had a cup under my leak and i'd say its like a tablespoon at most of oil after a week sitting in the garage. I have the new oil pan gasket and bolts but will probably wait until I have to do the turbos. My mechanic said do the turbos if you are going to drop the subframe.

FrankyGTR · 08-12-2015, 06:56 PM

i have that leak too brought it in and shop said its my oil pan.im going to diy

08-06-2015, 03:57 PM	#1
Riceball777 Lieutenant 166 Rep 466 Posts Drives: S2000 618whp/ e90 335i Join Date: Jul 2012 Location: Los Angeles iTrader: (0)	Where is this oil leak coming from I just bought a 2007 335i bone stock with 92,000 miles. I left the car on jack stands in my garage for about 5 days because i just installed a vrsf 7 inch intercooler and downpipes. I notice this small oil leak where the engine meets the transmission. Its really hard to tell where the leak is coming from but if i were to guess I would think its the oil pan gasket. It also does not leak very much. If i wipe it clean i might 1 or 2 drips ever other day when it was on jack stands not running.
	Appreciate 0 Tweet Quote

08-06-2015, 04:01 PM	#2
LQQKOUT Lieutenant 104 Rep 416 Posts Drives: 335XI Join Date: Jul 2011 Location: United States iTrader: (4)	I have a similar leak. I tightened the oil pan bolts 1/8 turn and it seamed to help. I'll have to change the pan gasket in the future.
	Appreciate 0 Quote

08-06-2015, 04:12 PM	#3
winn3r Private First Class 21 Rep 115 Posts Drives: 2020 X4MC Join Date: Apr 2013 Location: NYC iTrader: (0)	Valve cover gasket caused my oil leak.
	Appreciate 0 Quote

08-06-2015, 04:53 PM	#4
kong24680 Captain 252 Rep 998 Posts Drives: Silverstone Metallic F06 M6 Gr Join Date: Feb 2014 Location: Bay Area iTrader: (5)	I have around the same mileage, and just had to change oil pan, valve cover, and main oil filter housing gasket. Seems like 75-90k miles is when these gaskets start to deteriorate.
	Appreciate 0 Quote

08-06-2015, 05:12 PM	#5
MadeInPhilly First Lieutenant 44 Rep 301 Posts Drives: E30 318is, E90 335i, 03 GTI Join Date: Sep 2009 Location: Dallas, TX iTrader: (0)	Did you see my thread? http://www.e90post.com/forums/showthread.php?t=1150196 I narrowed it down to either the oil pan gasket or rear main seal. I have already done the Valve Cover gasket and Oil Filter Housing Gasket. I have read some members trying to tighten the aluminum one time use bolts. Many of them have snapped them so be careful.
	Appreciate 0 Quote

08-11-2015, 07:12 PM	#6
sankohuy First Lieutenant 46 Rep 385 Posts Drives: E92 335i Join Date: Oct 2012 Location: norcal iTrader: (0)	Check the valve cover gasket and the oil filter housing gasket
	Appreciate 0 Quote

08-12-2015, 05:00 AM	#8
Riceball777 Lieutenant 166 Rep 466 Posts Drives: S2000 618whp/ e90 335i Join Date: Jul 2012 Location: Los Angeles iTrader: (0)	the oil filter housing gasket is new and not leaking and i just changed plugs and coils and have a very good look at the valve cover and i do not think its leaking from there. So its either the oil pan gasket or the rear main sear right?
	Appreciate 0 Quote

08-12-2015, 05:06 AM	#9
musc Free T_e_r_r_Y :) 223 Rep 1,706 Posts Drives: X3MC, Audi TTRS MK3, 335is DCT Join Date: Dec 2006 Location: Charleston, SC iTrader: (9) Garage List 2023 BMW X3MC [10.00] 2011 BMW 335is [10.00]	Oil pan gasket at that mileage is pretty common to have issues.
	Appreciate 0 Quote

08-12-2015, 04:04 PM	#10
MadeInPhilly First Lieutenant 44 Rep 301 Posts Drives: E30 318is, E90 335i, 03 GTI Join Date: Sep 2009 Location: Dallas, TX iTrader: (0)	I had a cup under my leak and i'd say its like a tablespoon at most of oil after a week sitting in the garage. I have the new oil pan gasket and bolts but will probably wait until I have to do the turbos. My mechanic said do the turbos if you are going to drop the subframe.
	Appreciate 0 Quote

08-12-2015, 06:56 PM	#11
FrankyGTR Second Lieutenant 20 Rep 195 Posts Drives: N54 335i 6MT-R32GTR Join Date: May 2013 Location: Montreal iTrader: (0)	i have that leak too brought it in and shop said its my oil pan.im going to diy __________________ 2008 335i coupe 6MT BOOST FIEND
	Appreciate 0 Quote