Supple of that engine oil has a limited lifespan in that it gets diluted and contaminated over time hence needing a change over periodically to keep the engine in its best shape. Although some mechanics recommend exchanging the oil filter every other time oil is changed, given that the price to own a new filter is insignificant and the process of installation very simple, it is advisable to change the filter alongside oil. Using clean rags and newspapers: Be sure to prepare all the tools and all the materials that you will be needing in the task so that in case of spilling of liquids, there are materials to absorb them. It is recommended to use a hoist or ramps or jackstands so as to get better look at the beneath side of the vehicle. Learn the location of oil drain plug and the oil filter with extra caution, this is because the engine gets very hot and may necessitate the use of exhaust fans. Bring the engine to normal running temperature, while doing this one can get all the other needed tools or oil. When the engine oil is ready change, then jack up and safely support the vehicle and place the drain pan below the plug of the engine. By turning the wrench slowly, then unscrew the drain plug and let the old oil to fall on the pan after that switch on the turn signal wipe the drain plug before tightening it back. Place the drain pan directly at the base of the oil filter, then, with the help of a filter wrench, remove the old filter and let the dripping contents fall into the pan. Now you have to compare the old filter with the new one to ensure that they fit well, clean the mounting area and check on the gasket which might be stuck as a rubber. Coat the new filter gasket lightly with clean oil before installation in the engine, according to the recommended torque rating from the manufacture. After making sure that all the tools and rags are out of under the vehicle, lower the vehicle and find the oil filler cap inside the bonnet. To add fresh oil in to the engine add a four quart, use a dipstick to check the level of the new oil after approximately five minutes ,and if necessary begin the engine to circulate the new oil. This is done by starting the engine and then inspecting the oil pan drain plug, and oil filter if they are loose they are tightened tight in order to stop the leakage. Check the dipstick and add oil, if needed, and at the initial several using the car after an oil change, check for signs of oil leakage and its levels. Drain the old oil safely and in a proper manner take it to reclamation centers and even auto repair shops, the oil must be cool and well contained before transport.