Quote:
Originally Posted by kd8ksn
I ran 10w-30 Castrol Full Synthetic in mine, and the dealer suggested trying 5w-30 to see if that would help the ticking. I was experiencing a lot of ticking about two months ago (probably the cold), so I went ahead and did an oil change with the 5w-30 and haven't had an issue since. I will occasionally hear a little bit right at start up, but it disappears within 2 seconds.
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If that's the case, then going to 0W30 Castrol (GC) would help further, especially in colder climates.
It's also worth noting that the oil BMW uses in Germany, and the oil the engine was designed with, is 0W30. Not the 5W30 that BMW uses in North America (due to the high sulfur gas we have here.)