See Figures 1, 2 and 3
The maintenance schedules which follow are meant as a general guideline with which you can determine the service needed on your vehicle. It is important to stay as close to the mileage interval suggested between service changes. Of course, there is no harm performing a service early, but it is not recommended to prolong a service interval.
The maintenance schedules are broken into two categories, one for normal conditions, the second for more severe driving environments. Schedule B is for normal driving conditions, schedule A is for severe driving conditions.