Is there anything temporary I can add to the oil for a temp fix, something i can pick up on the way home tonight at Oreilly or pepboys like a sealant or additive?
I know this is against the recommended by BMW.

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2011 X5 35d 123,000 miles sport space gray/oyster

2005 X5 3.0i sport package Style 211
157,500 miles

2005 Chevy Avalanche Z66 BFG T/A Offroads