[Smokn944]

I've had my 08' 335xi for 7 months and was due for the yearly oil change, driven about 6,000 miles dealer changed it under 4/50k warr. Oil level didn't move when I had it, since the oil change now driven another 4k, still full. Whole time had Cobb tuned. How can other engines burn so much oil and others none? Doesn't seem all engines have same tolerances. Any input?