We've all been there (at least those of us who own older machines and don't perform the maintenance at the dealer anymore) - you get to change the oil on your car, but things become frustrating ...

First of all, we want to make sure you understand that this DIY is for the early versions of the E46 3er, the 1999-2000 models, fitted with OBCI. So, in case you own one of these, surely you've been ...