Periodic replacement of oil plays an essential role in preventive maintenance since an old engine oil becomes diluted and contaminated, causing an early wear. With every oil change, a new oil filter must be installed even when it is not recommended that a new filter be installed. Prior to beginning, prepare all required tools and materials, including a box end wrench or socket so as not to round off corners of the drain plug, clean rags and newspapers to use in case of spills. Elevate the car in front, with jackstands, and learn the locations of the oil drain plug and filter, taking into account any challenges that could be encountered by hot engine parts. Warm the engine to normal operating temperature, and use the time to assemble tools and check the proper type of oil. Place a drain pan beneath the drain plug that must be able to hold a minimum of 5 quarts and carefully remove the drain plug using a breaker bar or wrench with the assistance of an oil-resistant glove to avoid contact with hot oil. Let the oil drain out, changing the pan as needed but then wipe down the drain plug and the surrounding area and screw it back in and tighten it. Place the drain pan beneath the oil filter and loosen it with a filter wrench, being careful of tightness and accessibility problems. Take out the old filter, pouring its oil into the drain pan, and identify it with the new one. Wipe the area around the sealing of the engine and make sure that the rubber gasket of the old filter is not attached. Before attachment, apply a light layer of clean engine oil on the gasket of the new filter, and attach it, in accordance with the tightening recommendations of the manufacturer. Take away tools and materials under the vehicle and drop the vehicle. Removed the oil filler cap in the engine compartment and with a funnel pour the required amount of new oil into the engine. In a few minutes, check the level of the dipstick and when sufficient begin the engine to circulate the oil. Having run the engine a little, inspect at the drain plug and oil filter, and tighten, where necessary. Allow the oil to settle, re-read the dipstick, and add more oil as necessary, but do not fill up. Look at leaks and oil levels on the initial few trips following the change. Properly dispose of the old oil by consulting any local facilities on ways it can be recycled, and not to pour it on the ground or a drain.