How often do you change mobile 1 oil?

How often do you change mobile 1 oil?
Mobil 1 is a synthetic oil and as such the change interval can be extended beyond conventional oil. How much depends on how you drive. If you drive nothing but stop & go city driving then I would recommend changing the Oil/Filter every 5,000 miles. If you drive a mix of city & highway, I would recommend 7,000 miles. If you drive nothing but highway then 10,000 miles. Always change the filter at every oil change and use a quality filter such as Purolator, Wix, AC/Delco, etc. Also just as important as the Oil/Filter change is the Air Filter. Change your Air Filter every 30,000 miles unless you drive in dusty conditions, and then change it every 20,000 miles.