Philadelphia oil-change experts can be found at shops that sell tires and offer auto repair in Philadelphia. Many people head to dealerships in Philadelphia to get their oil changed, as it may be covered under the vehicle’s warranty. Wherever you go in Philadelphia, oil-change technicians tend to recommend getting your oil changed every three months or 3,000 miles (but you should check your car's manual to see what the manufacturer suggests). They’ll also tell you that changing the oil is an essential part of automotive maintenance—clean oil keeps engine parts lubricated, therefore ensuring proper operation and reducing wear and tear.