Hi Lysanne, All recommended services are designed to ensure your Toyota operates at its best. All our recommendations come from Toyota or from our Toyota Certified Technicians. Following the maintenance schedule set by Toyota is crucial to ensuring the longevity of your vehicle. We would not be doing our part without providing you with this information when you come in for service. If you wish to only have oil changes done and not any of the other Factory recommended servicing, we would be more then happy to accommodate!