guys for the NAS 11 & 21 whats the diff? same mileage only difference the months? Schedule Warning types Warning criteria NAS 10 (initial setting) Elapsed time (month) Every 6 elapsed months Driving distance (miles) Every 7,500 miles of driving distance Driving distance (km) Every 12,000 km of driving distance NAS 11 Elapsed time (month) Every 3 elapsed months Driving distance (miles) Every 3,750 miles of driving distance Driving distance (km) Every 6,000 km of driving distance NAS 20 Elapsed time (month) Every 5 elapsed months Driving distance (miles) Every 5,000 miles of driving distance Driving distance (km) Every 8,000 km of driving distance NAS 21 Elapsed time (month) Every 4 elapsed months Driving distance (miles) Every 3,750 miles of driving distance Driving distance (km) Every 6,000 km of driving distance
