Major Vs. Minor Services
A major service should be carried out every other service starting from the 2nd year service (mileage dependant on vehicle model).
A minor (or interim) service should be carried out every other service starting from the 1st year service (mileage dependant on vehicle model).
The differences between the two types of service vary from model to model and retail to commercial vehicles.
You can find out what is involved in each service by going to www.etis.ford.com and generate a service check sheet.