A mechanic wants

to change the oil in a car. To do this, the mechanic will need several tools and materials, including:

1. Oil filter wrench - to remove the old oil filter
2. Oil drain pan - to catch the old oil as it drains from the engine
3. Funnel - to help pour the new oil into the engine cleanly
4. New oil filter - to replace the old one
5. New oil - to fill up the engine after draining the old oil

The mechanic will also need to know the correct amount and weight of oil to use for the specific make and model of the car. Once all necessary tools and materials are gathered, the mechanic can begin the oil change process by first draining the old oil, replacing the oil filter, and filling the engine with the correct amount and weight of new oil.