How do you change oil on a Massey Ferguson 165?

To change the oil on a Massey Ferguson 165, first ensure the tractor is on a level surface and the engine is cool. Start by draining the old oil by removing the drain plug from the oil pan, allowing the oil to flow into a suitable container. Replace the drain plug, then remove and replace the oil filter before filling the engine with new oil through the dipstick tube, using the recommended oil type and quantity. Finally, run the engine for a few minutes, check for leaks, and verify the oil level using the dipstick, adding more oil if necessary.