| Oil top off '03 325i - Mobil 1 5W-30 Quick question. The dealer does my oil service. I checked it this morning and it could use just a little. The dealer says they use full synthetic 5W-30. I got some Mobil 1. Any problem using that for a top off. Thanks for any feedback! Again, its the 2.5L I6 in a, '03 325i. |