The vehicles are fitted with an oil life indicator lamp that comes on the instrument when the oil is 'used up' according to various factors this system allows for more than 3000 miles between 'changes' frequent changes are advisable for the extension the engine life. If they prefer to stick with the oil life indicator, they should under no circumstances take the car beyond 10,000 miles before changing the oil. It is another type of preventive maintenance since if the oil gets old, it gets diluted and contaminated and this makes the engine wear out early. At the start of your hand washing be sure to have all the tools within reach and which paper, whether its rag or newspapers for wiping off spills. The best way to get at the underside of the vehicle is with a hoist, ramps, or jackstands. Become acquainted with the position of the oil drain plug and oil filter and it is advisable to warm the engine so as to make oil to drain easily. Choose a flat surface and park the car, then start the engine and let it run to warm the fluids, before switching it off. Chock the wheels, set the jackstands on the car, put the drain pan below the drain plug and using the gloves remove the plug since it will be extremely hot. Let the old oil to seap out completely, check it for metal particles. Remove the drain plug, clean it and the surrounding region then reinstall the plug and tight it. Place the drain pan directly under the oil filter, tighten the filter wrench on the filter, loosen the filter and remove while inclining the car to avoid spillage of the oil. Wipe where the oil filter comes in contact with the engine so that you do not find the new gasket is stuck on the old one. Reciprocate the old and new filters, clean the gasket of the new filter with oil, and put in the normal way as instructed in the manual. Once all the tools an rags are out of the vehicle, lower the vehicle and pour in seven quarts of new oil through the filler cap and check the level using the dip stick. Switch on the engine to let the oil to go round then switch of the engine and check the level of the oil and in case it is low add the oil. It is also important to inspect for leaks and also the oil level after the oil change for the initial few trips. Take care not to dump the old oil, either in drains and the ground; instead, it should be transported in an appropriate container to a recycler.