Oil leak
 

Hi all, I have noticed an oil leak on the LHS (driver) side of the engine (3.0I), just below the inlet manifold (maybe 5 or 6 centimeters (2 in.) below the front side of the manifold). This is not the cam cover gasket (I checked). What could it be?

i just had this too today, no warning no nothing on the dash, and its leakin alot :S

There are 3 things in that area that can leak oil...
1: the oil hose that goes from the front side of the head to the oil filter housing. #15
2: The oil filter housing gasket (where filter housing meets block) #6
3: The crankcase vent valve (especially the bottom hose #4) Cyclone valve

Sorry, this post is old and I didn't update it.:rolleyes:
The leak came from the OS bottom hose, so Waesel was right on option 3!:thumbup:
See picture below and notice that with such a failure, these engines are quite good character as it still ran fine except a rough idle!

Good info Weasel,Mine turned out to be #6 also know as the (oil stand gasket):thumbup:

thanks weasel for the info, but the digram u provided is for 3.0i
do u know whats the cause or the digram for the 4.4i:dunno:

Yeah, those were for the OP who has the 3.0i. There are many gaskets/areas that can leak on the 4.4i, and there are 2 different 4.4i engines available depending on model year etc.

How about an oil leak dripping from the drain plug cover? The drain plug door cover thing is bent down. I dont know how this happened. Maybe driving over deep snow, or perhaps the Mr. Lube pros dont know what they are doing.

I hope my drain plug threads are not stripped.

When I leave the car in the garage over night, by morning there is a new oil stain about 10 centimeter in diameter on the floor.

Also right in the center of the underside of the engine there are drips of oil collecting.

ya but i have 02 4.4i m62 engine.. and its leaking heavely front the left side(driver side area) but i cant figure out where its coming from.. my friend said he's 85% sure its a profile gasket of the the upper timing case.. but he said he has to open it up to see it... i dont wanna replace it or dig into it when the cause is something else.. do u have any idea or wats common on these X5.. i already replaced both valve cover gaskets and both breather hoses back 3 months ago. i would appreicate it weasel if u can help me out.
BTW i hope ur feeling better :)

my friend is talking about # 5 on this picture:rolleyes:
E53 X5 4.4i UPPER TIMING CASE

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RealOEM.com Home => Select another car => Engine => Engine housing
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No.DescriptionSupplementQty From Up To Part NumberPriceNotes01Timing case cover, topZYL.1-41

11141745506$96.98+core02Timing case cover, topZYL.5-81

11141745509$96.98+core03Gasket ring8,1X3,5X7,71

11141736758$1.71
04PROFILE-GASKETZYL.1-41

11141741532$8.04
05PROFILE-GASKETZYL.5-81

11141741533$8.04
06Hex bolt with washerM6X65-Z15

11141438558$0.72
07Hex bolt with washerM6X80-Z17

11141747633$1.08
08Screw plugM82

11141432698$1.28
09GASKET-FLANGE
2

11141435023$9.58
10Hex bolt with washerM6X202

11131439736$0.58
11Solenoid valve (SOLV)
2

11367524489$178.00
12Camshaft speed sensor
2

12147539166$116.05
13O-ring17X32

12141748398$1.20
14Fillister-head screwM6X16ZNNIV SI2

13627545338$0.47
Notes
+core = plus core charge (possibility of a return of the old part)
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