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      09-16-2020, 06:47 PM   #5
Opie55
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Drives: '15 650i Convertible
Join Date: Apr 2018
Location: US

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Good point. I had never thought of that oil getting down there. OP, the breather lines, which cross over the top of the engine, are probably the old style on your car because they are on mine, which is a 2015. They are plastic accordion hoses that look like the covering they put over wiring. They get brittle and crack. The new ones are heavy duty rubber. They are now under warranty for 10 years/100,000 miles. When Walt (above) posted about his, I checked mine and they were still ok. Now they are not.