The dealership (service) is asking me to do my maintenance every 5,000kms. On the average, I do 2.500kms in a month, which would mean I need to bring my Journey for service every 2 months. Would it affect my warranty if I don't follow the dealership's scheduled maintenance, and only bring my Journey for service say every 7,500kms or 3 months? The manual states 13,000kms or 6months anyway. Any thoughts?