The oil in hybrid vehicles should generally be changed every 5,000 or 6,000 miles. Reference the owner's manual to determine the manufacturer's recommendations and follow the guidelines.
The owner's manual can also be referenced to determine the type of motor oil that should be used. The oil in vehicles must be changed on a regular basis to maintain the performance of the engine. The effectiveness of oil decreases with use and time as it becomes contaminated with the by-products of burning gasoline. Oil is pumped through the engine and creates a lubricating layer that prevents the metal parts of the engine from touching.