What is the difference between an oil change interval by miles and by time?

You should change your oil based on whichever comes first, mileage or time, because oil degrades over time even if you do not drive much. Most manufacturers recommend a mileage interval, such as 5,000 to 7,500 miles for synthetic, but also a time limit, typically six months to one year. If you drive very little, the oil can still break down, collect moisture, and lose effectiveness while sitting, so the time-based limit protects low-mileage drivers. In Miami's heat and humidity, moisture and oxidation can affect oil even in a parked car. So if you have not hit your mileage but it has been around six months to a year, it is time for a change. Motoro Cars' ASE-certified technicians help you track both. Get our $29.99 synthetic oil change with a 33-point inspection by calling Wynwood at (786) 634-2002 or Doral at (786) 633-3220.