3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
Is there anything like that I could add to my oil to help break down sludge and deposits prior to an oil change. Mine is coming up and I remember hearing something that you add to your oil a few hundred miles before you change it and when you flush it out it takes with it some of the crap built up over the years. Anyone heard of this and is it worth it?
Question is a little broad. Best BMW mechanic I know recommends using best oil you can afford & follow factory recommendations for service. If you know that the car has been neglected, there are some products that claim to help. bobistheoilguy.com has lots of discussion to help you decide if you need something besides clean oil. Good Luck!
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