Don't be surprised if you have to replace your valve cover due to cracking after 300,000 miles though. It can cure a rough idle like mine was suffering at 317,000 miles.
2002 X5 3.0 339,700 miles
2014 428i 36, miles
2004 325i sold at 123,600 miles
2001 325i sold at 66,000 miles
1970 Firebird Under restoration
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