Originally Posted by NeverEnough
I can't say I agree with that. Think about it. The car holds 8.5 quarts. The FSS can easily go to 8-9K miles between changes. So, if you changed it every 3,000 like a conventional car, you would be spending the same amount over time anyway.
Add to that BMW claims you can go 15K with Mobil 1. They offer their "free" maintenance with a 15K change. So, if it can go 15K then it is definitely cheaper.