Hazardous waste is waste that poses substantial or potential threats to public health or the environment. In the United States, the treatment, storage, and disposal of hazardous waste is regulated under the Resource Conservation and Recovery Act (RCRA).
Porsche recommends that the oil in the Boxster be changed every 15,000 miles as a part of the normal maintenance procedure. The recommended oil is Mobil 1 comes in several different grades. If you wish to change your oil more often and want to avoid some of the expense associated doing so, you can change it yourself.
Method 3 Changing Your Engine Oil. 1. Know how often to change your oil. How often you need to change your oil depends on the type of car you own. Some cars need an oil change every 3,000 miles (4,800 km), while others can go up to 10,000 or even 15,000 miles (24,000 km) without an oil change.