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Old 03-16-2018, 05:46 PM   #1
V12
2nd Gear Member
 
Join Date: May 2007
Location: Markham
Posts: 56
F10 535 oil cooler leak fix



This is for the oil cooler, heat exchange gaskets which usually shrink by around 60-100k kms and cause oil to leak in the front.

From the top it seems like the oil gasket from the oil filter housing is leaking, but it isn't. I was wondering why it kept on leaking even with a new oil filter ring gasket. Sneaky bugger.


Don't wait to change it out if you car is leaking oil from the front. It can cause the belt to slip off the pulleys and cause catastrophic damage as the belt can be pulled inside the engine and make the timing chain skip.

Just finished changing mine out myself and saved many hundred $$$ and have a spare set to sell. The front one is pretty straight forward, 3 bolts, a 30 mins job, but the side one is a bit painful.

Besides my 535, it also fits the 528 and almost any 1,2,3,4,5,6,7 series with the N52, N54 and N55 engine . So the 128, 135,228, 235, 328, 320, 335, 428, 435, 528, 535, 640, X1, X3, X4, X5 ,X6 etc etc will need it changed too sooner or later.

Part #s are 11428637820 and 11428637821


Mine shrunk by 2mm compared to the new one, allowing oil to leak on top and below the oil cooler


Gasket 4 and 5 are all you need to change
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