as above it is ment to be bmw specific LL-04 oil, I use PETRONAS syntium 5w30 low ash oil as that's what we use where I work at fiat and is also ll-04 grade how ether you can use other grades as long as its turbo diesel approved as I had this discussion in another thread and some were using grades such as 0w40 etc but id stick to the 5w30 fully synthetic ll-04 stuff if it was me, my local bmw main dealer said to use 5w30 castrol magnatec