Originally Posted By: UltrafanUK
This is an old block, so I would not use a 5w30 as one member suggested, the German Iffylube shops only use Xw40 oils in cars that are out of warranty. Mostly 5 or 10w40 oils from Castrol, Mobil, Shell or Liqui Moly.
The BMW 5w-30 is a high HTHS (>=3.5cP) oil, similar to Castrol "GC" 0w-30. There is VERY little difference between an LL-01 5w-30/0w-30 and an LL-01 0w-40/5w-40, as they all have very close to the same HTHS, which is mandated by the ACEA rating and the BMW spec.