1) Is there a time limit with the FSS System despite mileage? For example, would there be a limit of 12 or 13 months even if the system wouldn't otherwise specify an oil change?

2) Is there some alternative to 0W-40 Mobil 1 that would work with the FSS system? For example could you use 15W-50 Mobil 1 or 10W-40 Redline?

3) How much are dealers charging for 0W-40 Mobil 1?

TIA,
Bud