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      10-06-2016, 09:03 PM   #5
MattPro
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Drives: '13 F10 550iX, '91 E30
Join Date: Dec 2015
Location: Chicago Burbs

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Quote:
Originally Posted by Zer0Cool92 View Post
2011 550i here. Dealer just found out i have an oil leak in the rear right side of engine... Could that be the valve seals or maybe the lower/upper oil gaskets? Just hit 73k miles.

Is this a major/expensive job for either? Valve seals vs oil gaskets/

Thank ahead for any input.
Valve seals means oil will be leaking into the combustion chamber and be burned. So it would not leak, just smoke out of the exhaust. To repair that, the engine would have to be pulled and disassembled. It is more likely an oil pan gasket since that would be external leaking.
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