Originally Posted by WWONG
Change the filter. Non-synthetic can last more than 3000 miles... up to 10k+ from what I've seen. It's the filter that eventually fails around 3kish and begins to contaminate the oil.
True, but the detergents and additives are also depleted.
'17 M3 Imola Red/Carbonstructure Cloth, Competition, Lighting, 6MT
Retired: '93 325i |'99 Jeep Wrangler Sport |'06 330i Sport |'08 335i Sport |'08 328i Sport |'09 335d Sport