Originally Posted by See5
2500mi oil changes on synthetic? I think I've seen it all now. That's just pissing away money.
Anyway, I do 7500-8000mi. Going out to 14,000mi on good oil and no trackdays/extremely hard driving probably works fine as well.
Don't think anyone has done a back to back test but people have had success with both.
I agree with this, unless you're pushing the car extra hard.
Honestly I think the intervals of oil changes under the BMW program are a bit long. But they're free so how can you really complain.
I don't push my car that often, mostly a DD, but when my 4yr / 50k runs out i'm sticking with 7.5k miles between oil changes.