Originally Posted by Josh1a1h
What should I run for my 335i, and where is the best place to buy it from?
Josh, there's been several threads on this topic. FWIW I use Fuchs Titan Pro S 5W-40 for my 335i, sourced from Opie Oils, you need 6.5 litres and they supply oil filters too. The wise owls on the threads I refer to suggest that this oil is the one to get for the N54 engine (I think Mobil 1 is fine too).