求翻译：11、要定期对发动机进行预防保养，因为发动机长久失调会多耗燃油。车辆的节油是一个系统性的工程，除了与驾驶习惯、技巧有关之外，还与车辆的保养有着直接的关系。是什么意思？

11, the engine on a regular basis for preventive maintenance, because the engine long-term disorders will be more consumption of the fuel. Vehicle fuel economy is a systematic project, in addition to driving habits, and skills related to, but also has a direct relationship with the maintenance of th