What Oil Does a 2003 BMW 325i need?

BMW has its own factory oil which is a synthetic. I would use a Mobil I for European cars, it is a better oil than the BMW oil. This info is from the factory BMW teacher I studied with, by the way. Most of the recommend weights are 5w-30 and this is a SYNTHETIC oil< be sure you use that!!

5W-30 full sythetic, I think like 6.9 quarts

castrol sintetic W5.30