How do you change a Lexus gs 300 engine oil?

To change the engine oil in a Lexus GS 300, start by warming up the engine for a few minutes to thin the oil, then turn it off and allow it to cool slightly. Place a drain pan under the oil pan, remove the drain plug, and let the old oil drain completely. Replace the drain plug, remove the old oil filter using an oil filter wrench, and install a new filter. Finally, pour new oil into the engine through the oil filler cap, checking the dipstick to ensure the correct level, and then run the engine for a few minutes to circulate the oil.